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| 1 | 生物炭的10年土壤培肥效应显示文摘大量短期的室内试验和田间试验研究表明,施用生物炭可以增加土壤碳固定,提升土壤肥力和作物产量,然而关于生物炭的长期土壤肥力效应尚不明确。为此,依托持续10年的生物炭的田间定位试验[4个处理:对照(CK)、生物炭4. 5 t·hm-2·年-1(B4. 5)、生物炭9 t·hm-2·年-1(B9. 0)、秸秆还田(SR)],研究了长期施用生物炭对土壤肥力状况的影响。结果显示,与对照相比,长期施用生物炭和秸秆还田对土壤p H值没有显著影响,但容重降低了2. 2%~8. 2%,施用生物炭的土壤电导率降低了1. 5%~7. 8%,而秸秆还田处理土壤电导率提高了4. 7%~13. 4%。施炭和秸秆还田使土壤有机质(SOM)含量增加57. 7%~123. 1%,总氮含量提高11. 3%~21. 9%,总磷没有显著性变化。不同处理土壤NH+4-N含量的差异不显著,而施用生物炭和秸秆还田土壤NO-3-N含量增加3. 8%~67. 1%,且高炭处理的效果显著。土壤有效磷含量显著降低了23. 1%~42. 0%,速效钾含量上升了2. 0%~23. 1%。总体而言,长期施用生物炭提升了土壤肥力,尤其是对土壤有机质的提升有显著的效果。 | 史思伟 娄翼来 杜章留 王芊 韩硕 张庆忠 | 2018 | 中国土壤与肥料2018,,6: | 21 |
| 2 | 黑土活性有机碳库与土壤酶活性对玉米秸秆还田的响应显示文摘秸秆还田是培肥地力、控制焚烧导致大气污染的重要途径,探讨东北春玉米秸秆不同还田量对黑土活性有机碳库和酶活性的影响,为农业生产中实施秸秆还田措施提供理论基础。本研究设置了对照不施肥(CK)、单施氮磷钾肥(NPK)、化肥配施1/3秸秆还田(NPKS1)、化肥配施1/2秸秆还田(NPKS2)和化肥配施全量秸秆还田(NPKS3)5种处理,主要分析了不同处理对土壤活性有机碳组分、土壤碳库管理指数、土壤酶活性及春玉米产量的影响。结果表明,秸秆还田可以明显提高可溶性有机碳(DOC)、微生物量碳(MBC)、颗粒有机碳(POC)和易氧化有机碳(ROC)的含量,且提升效果随着还田量增加而增加。不同秸秆还田量下碳库管理指数差异明显,NPKS1、NPKS2和NPKS3处理相对NPK处理分别增加了52.83%、86.92%和114.76%。秸秆还田后土壤木聚糖酶(BXYL)、纤维素酶(CBH)、乙酰基β-葡萄糖胺酶(NAG)和β-葡萄糖苷酶(BG)的活性均有不同程度提高,以NPKS3处理对BXYL酶活性提升效果最显著(P<0.05)。秸秆还田明显提高春玉米产量,但是不同还田量之间差异不显著。相对NPK处理,NPKS2和NPKS3处理显著提高了活性碳组分DOC和POC含量、碳库活度、碳库活度指数及碳库管理指数、土壤CBH、BG和BXYL酶活性(P<0.05)。综合来看,在本试验地区,玉米秸秆为4500~9000 kg·hm^(-2)是比较适宜的还田量。 | 贺美 王立刚 王迎春 朱平 李强 沈欣 | 2018 | 农业环境科学学报2018,37,9: | 21 |
| 3 | Biochar and its importance on nutrient dynamics in soil and plant显示文摘Biochar,an environmentally friendly soil conditioner,is produced using several thermochemical processes.It has unique characteristics like high surface area,porosity,and surface charges.This paper reviews the fertilizer value of biochar,and its effects on soil properties,and nutrient use efficiency of crops.Biochar serves as an important source of plant nutrients,especially nitrogen in biochar produced from manures and wastes at low temperature(≤400℃).The phosphorus,potassium,and other nutrient contents are higher in manure/waste biochars than those in crop residues and woody biochars.The nutrient contents and pH of biochar are positively correlated with pyrolysis temperature,except for nitrogen content.Biochar improves the nutrient retention capacity of soil,which depends on porosity and surface charge of biochar.Biochar increases nitrogen retention in soil by reducing leaching and gaseous loss,and also increases phosphorus availability by decreasing the leaching process in soil.However,for potassium and other nutrients,biochar shows inconsistent(positive and negative)impacts on soil.After addition of biochar,porosity,aggregate stability,and amount of water held in soil increase and bulk density decreases.Mostly,biochar increases soil pH and,thus,influences nutrient availability for plants.Biochar also alters soil biological properties by increasing microbial populations,enzyme activity,soil respiration,and microbial biomass.Finally,nutrient use efficiency and nutrient uptake improve with the application of biochar to soil.Thus,biochar can be a potential nutrient reservoir for plants and a good amendment to improve soil properties. | Md Zahangir Hossain Md Mezbaul Bahar Binoy Sarkar Scott Wilfred Donne Young Sik Ok Kumuduni Niroshika Palansooriya Mary Beth Kirkham Saikat Chowdhury Nanthi Bolan | 2020 | Biochar2020,2,4: | 15 |
| 4 | 秸秆还田对土壤环境影响的研究进展显示文摘随着粮食生产技术的发展和农村生活水平的提高,农作物秸秆的产量和利用方式也发生了巨大的变化。秸秆直接还田是秸秆综合利用的一种有效途径,近几年受到了广泛关注。简述了我国秸秆产量和综合利用现状,重点分析了秸秆直接还田对土壤理化性质、营养元素、有机质、微生态以及农作物产量的积极影响,同时讨论了秸秆还田可能给环境带来的负面影响,并指出添加生物腐熟剂是促进秸秆快速还田的有效措施,旨在为合理高效地利用秸秆资源提供参考。 | 董祥洲 徐粲然 朱启法 陈亚奎 高琴 王学瑛 | 2020 | 安徽农业科学2020,48,13: | 10 |
| 5 | 秸秆还田、地膜覆盖及施氮对冬小麦田N_(2)O和N_(2)排放的影响显示文摘为探究不同耕作方式及施氮水平下黄土高原地区旱地冬小麦田N_(2)O排放规律,运用静态箱-气相色谱法研究了冬小麦田N_(2)O排放动态.以冬小麦‘小偃22’为材料,采取双因素裂区试验设计,主区为3种耕作模式:常规耕作(CT)、秸秆还田(SM)和平膜覆盖(FM);副区为3种氮水平处理:不施氮、减氮20%(144 kg·hm^(-2))和常规施氮(180 kg·hm^(-2)).以常规耕作(CT)为对照,探讨不同施氮水平下FM和SM对土壤N_(2)O排放产生的影响,同时分析环境因子与N_(2)O排放通量的相关性,并根据经验公式估算N_(2)排放量.结果表明,各施氮处理的土壤N_(2)O的排放主要集中在施肥后20 d内,且N_(2)O排放通量峰值出现在施肥后两周之内.冬小麦田的平均N_(2)O通量为1.92~22.75μg·(m^(2)·h)^(-1),累积排放量为0.10~0.46 kg·hm^(-2);肥料氮的N_(2)O排放系数为0.05%~0.28%,N_(2)O全球增温潜势为26.72~122.15 kg·hm^(-2),N_(2)年排放总量为0.70~1.82 kg·hm^(-2).施肥和覆膜可以显著提高土壤N_(2)O排放通量(P<0.05);SM有降低N_(2)O排放总量的趋势.FM下的肥料氮的N_(2)O排放系数和全球增温潜势均显著高于CT和SM(P<0.05).不施氮处理的N_(2)O排放只与土壤充水孔隙度(WFPS)显著正相关(P<0.05);施氮处理的N_(2)O排放与WFPS、ω(NO_(3)^(-)-N)、ω(NH_(4)^(+)-N)和5 cm地温均呈显著正相关(P<0.05).因此,不施肥条件下水分是控制旱地冬小麦田土壤氮素转化和N_(2)O排放的主要因素;施肥条件下硝化作用和反硝化作用均对N_(2)O排放有贡献.地膜覆盖和施氮显著增加了旱地N_(2)O排放、肥料氮排放系数和全球增温潜势,秸秆还田有降低N_(2)O排放的趋势. | 彭毅 李惠通 张少维 阳婷 王筱斐 周春菊 王林权 | 2022 | 环境科学2022,43,3: | 9 |
| 6 | 水炭运筹下水稻根系对氮素吸收利用的^(15)N示踪分析显示文摘为揭示水炭运筹下水稻根系对氮素的吸收利用情况,采用田间小区试验与^(15)N示踪微区结合的方法,试验设置两种灌水模式(浅湿干灌溉、常规淹灌)和4个秸秆生物炭施用水平(0、2.5、12.5、25 t/hm^(2)),以常规淹灌作为对照,研究浅湿干灌溉模式施加秸秆生物炭对水稻根系形态特征和生理特性的影响,以及根系对肥料和土壤氮素的吸收利用情况。结果表明:施加秸秆生物炭改变了水稻根系形态特征和生理特性,适量的秸秆生物炭提高了根系的主根长、根体积、根鲜质量、根系活跃吸收面积、根系伤流强度和根系活力,优化了根冠比,有利于根系对氮素的吸收;浅湿干灌溉模式水稻根系对肥料-^(15)N和土壤氮素的吸收量与根系伤流强度和根系活力呈极显著正相关(P<0.01),与活跃吸收面积呈显著正相关(P<0.05),与根冠比呈显著负相关(P<0.05);浅湿干灌溉模式根系形态特征和生理特性的变化促进了水稻根系对肥料-^(15)N和土壤氮素的吸收,提高了水稻产量和氮肥利用率。其中,浅湿干灌溉模式施加12.5 t/hm^(2)秸秆生物炭处理的水稻经济产量、氮肥吸收利用率(NUE)、氮肥农学利用率(NAE)、氮肥偏生产力(NPFP)较不施加秸秆生物炭处理分别提高了13.05%、30.54%、11.67%和13.05%。本研究可为秸秆生物炭在寒地黑土区稻田的应用提供理论依据和技术支撑。 | 张作合 张忠学 李铁成 秦子元 孙迪 宋健 | 2021 | 农业机械学报2021,52,6: | 9 |
| 7 | 20 years'development of super rice in China--The 20th anniversary of the super rice in China显示文摘Rice(Oryza sativa L.)is originated from Asia and more than 90%of rice is produced in Asia.As the most important cereal crop in the world,rice is the staple food for over 1/3global population,while this proportion is over 60%in Asia(Wan 2010).In order to maintain the most important role that rice has played in Asian agriculture and ensure | CHEN Wen-fu XU Zheng-jin TANG Liang | 2017 | Journal of Integrative Agriculture2017,16,5: | 8 |
| 8 | Soil organic carbon associated with aggregate-size and density fractions in a Mollisol amended with charred and uncharred maize straw显示文摘Straw return has been strongly recommended in China,whereas applying biochar into soil is considered to provide more benefits for agriculture as well as the environment.In this study,a five-year(2011-2015) field experiment was conducted to evaluate the effects of uncharred maize straw amendment(MS) and charred maize straw amendment(charred MS) on organic carbon(C) contents in bulk soil and in various soil aggregate-size and density fractions.Compared to no amendment(CK),the bulk soil organic C content significantly improved by 9.30% for MS and by 23.4% for charred MS.Uncharred and charred maize straw applied annually at a consistent equal-C dosage resulted in 19.7 and 58.2% organic C sequestration efficiency in soil,respectively,after the five years of the field experiment.The percentages of macroaggregates(>0.25 mm) and occluded microaggregates(0.25-0.053 mm) obviously increased by 7.73 and 18.1% for MS and by 10.7 and 19.6% for charred MS,respectively.Moreover,significant incremental increases of 19.4 and 35.0% in macroaggregate-associated organic C occurred in MS and charred MS,respectively.The occluded microaggregates associated organic C significantly increased by 21.7% for MS and 25.1% for charred MS.Mineral-associated organic C(<0.053 mm) inside the macroaggregates and the occluded microaggregates obviously improved by 24.7 and 33.3% for MS and by 18.4 and 44.9% for charred MS.Organic C associated with coarse particulate organic matter(POM) within the macroaggregates markedly increased by 65.1 and 41.2% for MS and charred MS,respectively.Charred MS resulted in a noteworthy increment of 50.4% for organic C associated with heavy POM inside the occluded microaggregates,whereas charred MS and MS observably improved organic C associated with heavy POM inside the free microaggregates by 36.3 and 20.0%,respectively.These results demonstrate that uncharred and charred maize straw amendments improve C sequestration by physically protecting more organic C in the macroaggregates and the occluded microaggregates.Compared to the feedstock straw amendment,charred maize straw amendment is more advantageous to C sequestration. | GUAN Song LIU Si-jia LIU Ri-yue ZHANG Jin-jing REN Jun CAI Hong-guang LIN Xin-xin | 2019 | Journal of Integrative Agriculture2019,18,7: | 7 |
| 9 | 玉米秸秆生物炭对秸秆腐熟进程、养分含量和CO_2排放量的影响显示文摘生物炭具有良好的理化特性(富碳、呈碱性、孔隙丰富),能够有效调节其所在系统的理化性质.通过室内培养试验研究了玉米秸秆生物炭对玉米秸秆腐熟进程以及腐熟产物的理化性质、养分含量和CO_2气体排放的影响.试验设置4个处理:对照(CK);生物炭添加量5%(B_1,生物炭干基质量占玉米秸秆腐熟体系的干基质量分数);生物炭添加量10%(B_2);生物炭添加量20%(B_3).结果表明:生物炭能够提高秸秆腐熟体系的升温速率和温度峰值,加快秸秆腐熟进程;生物炭能够提高秸秆腐熟过程中微生物活跃时期的pH值,提高秸秆腐熟体系的电导率(EC),为微生物降解有机物提供更适宜的环境;生物炭能够促进秸秆腐熟体系有机质的降解,增加秸秆腐熟体系的总养分含量,提高秸秆腐熟产物的品质.另外,随着生物炭添加量的提高,氮(N)含量没有显著变化,磷(P_2O_5)含量和钾(K_2O)含量都显著提高.其中,B_3处理的P_2O_5和K_2O含量较CK分别提高了0.2%和0.9%.生物炭添加能够提高秸秆腐熟体系CO_2的排放通量,且CO_2排放通量与温度的变化趋势一致,进一步说明生物炭能够提高微生物降解有机物的强度. | 刘赛男 高尚 程效义 鄂洋 兰宇 刘遵奇 孟军 | 2019 | 应用生态学报2019,30,4: | 6 |
| 10 | 炭基肥连续两年施用对土壤质量的影响显示文摘以玉米为试材,基于等养分供给,设置化肥(T1)、炭基肥(T2)、炭基肥化肥配施(T3)、缓释肥(T4)、有机肥化肥配施(T5)5个处理,以不施肥为对照(CK)。通过2年田间定位试验,研究不同施肥措施对土壤团聚体形成、土壤化学性状及酶活性的影响,以期为土壤结构性状改良和农业面源污染防控提供参考依据。结果表明:相比化肥,炭基肥化肥配施可显著增加土壤0~20 cm和20~40 cm土层水稳性大团聚体含量(WSA>0.25 mm)75.7%和64.4%;显著提高0~20 cm土层土壤有机质、速效磷和速效钾含量;显著提高0~20 cm土层土壤真菌、细菌和放线菌数量;显著提高土壤磷酸酶活性18.6%、过氧化氢酶活性5.3%、脲酶活性59.4%,土壤酶活性显著增强,具有和有机肥化肥配施相同的效果。综上所述,炭基肥化肥配合施用具有显著改善灰钙土物理、生物学性状,提高土壤质量的作用。 | 柳骁桐 纪立东 孙权 司海丽 王锐 | 2021 | 北方园艺2021,,7: | 4 |
| 11 | 秸秆还田对植烟土壤改良及烤烟品质的影响探究显示文摘秸秆还田是我国一项重要的烟田有机培肥措施,可以有效改善土壤质量、提高烤烟品质,具有较好的经济效益和社会效益。基于此,综述了秸秆还田对土壤理化性质、土壤微生物性质和烤烟品质的影响,并展望未来的研究方向,以期深入发展秸秆高效资源利用提供参考依据。 | 杨应粉 许山河 郑武 黄鹤鸣 卢平 | 2021 | 南方农业2021,15,11: | 4 |
| 12 | Application of Rice Husk Biochar for Achieving Sustainable Agriculture and Environment显示文摘This paper critically reviewed the current knowledge and challenges of rice husk biochar(RHB)production and its effects on soil properties,plant growth,immobilization of heavy metals,reduction of nutrient leaching and mitigation of greenhouse gas emissions.The characteristics of RHBs produced at various pyrolysis temperatures were discussed and compared to biochars derived from other agro-industrial wastes.RHBs produced at higher pyrolysis temperatures show lower hydrogen/carbon ratio,which suggests the presence of higher aromatic carbon compounds.The increase of pyrolysis temperature also results in production of RHBs with higher ash content,lower yield and higher surface area.RHB usually has higher silicon and ash contents and lower carbon content compared to biochars derived from other feedstocks at the same pyrolysis conditions.Although it depends on soil type,RHB application can improve soil organic carbon content,cation exchange capacity,available K concentration,bulk density and microbial activity.The effect of RHB on soil aggregation mainly depends on soil texture.The growth of different crops is also enhanced by application of RHB.RHB addition to soil can immobilize heavy metals and herbicides and reduce their bioavailability.RHB application shows a significant capacity in reduction of nitrate leaching,although its magnitude depends on the biochar application rate and soil biogeochemical characteristics.Use of RHB,especially in paddy fields,shows a promising mitigation effect on greenhouse gas(CH4,CO2 and N2O)emissions.Although RHB characteristics are also related to other factors such as pyrolysis heating rate and residence time,its performance for specific applications(e.g.carbon sequestration,pH amendment)can be manipulated by adjusting the pyrolysis temperature.More research is needed on long-term field applications of RHB to fully understand the advantages and disadvantages of RHB as a soil amendment. | Hossein Asadi Mohammad Ghorbani Mehran Rezaei-Rashti Sepideh Abrishamkesh Elnaz Amirahmadi Chen Chengrong Manouchehr Gorji | 2021 | Rice science2021,28,4: | 4 |
| 13 | 单季施用生物炭提高土壤肥力及小麦玉米轮作周年产量显示文摘在全球变暖的背景下,生物炭在固碳减排、持水保肥、提高作物产量等方面发挥重要作用,而在小麦玉米轮作系统中关于生物炭施用对土壤养分持留及作物产量持续影响尚不明确。为探明单季生物炭还田对鲁西平原石灰性潮土区冬小麦—夏玉米轮作系统土壤养分及作物产量的影响,通过盆栽试验,设置4(B1)、8(B2)、16(B3)、24(B4)、32(B5)、40(B6)t/hm^(2)等6种不同的玉米秸秆生物炭(450℃)施用量,以未施用生物炭作为对照(CK),研究冬小麦单季施用生物炭对土壤养分、冬小麦及夏玉米产量的影响。结果表明,施用生物炭可以提高土壤养分含量,而对土壤pH值、电导率(EC)和硝态氮(NO_(3)^(-)-N)含量的影响与对照相比差异不显著,B6处理显著提高了土壤铵态氮(NH_(4)^(+)-N)、速效钾(AK)、有机碳(SOC)及水溶性有机碳(DOC)的含量。施用生物炭可以增加冬小麦—夏玉米籽粒产量,冬小麦季B4处理显著增产50.82%,夏玉米季B3、B4、B5、B6处理分别显著增产45.62%、54.69%、57.97%、65.24%。冬小麦—夏玉米周年产量与土壤NO_(3)^(-)-N、NH_(4)^(+)-N、AK、SOC、DOC含量呈显著或极显著正相关。综合生物炭施用对土壤肥力、冬小麦—夏玉米籽粒产量及生物炭还田成本等方面进行分析,在冬小麦单季生物炭还田条件下,鲁西平原石灰性潮土区施用24 t/hm^(2)玉米秸秆生物炭有利于冬小麦—夏玉米轮作系统作物产量的增加及土壤肥力的提升。 | 郑云珠 孙树臣 | 2022 | 江苏农业科学2022,50,20: | 3 |
| 14 | 中国主粮作物生物炭产量效应的Meta分析显示文摘为定量评估生物炭对主粮作物产量的影响,收集了公开发表的116篇相关文献,共866对数据,采用Meta分析法定量分析了生物炭对我国主粮作物产量的影响及其影响因子,同时构建结构方程模型(SEM)进一步解释了因子间的交互关系.结果表明,与不施用生物炭相比,生物炭施用后可改善主粮田土壤理化性质,提高主粮作物产量,平均增产率为8.77%.其中,当生物炭pH为7~8时,平均增产率最大,可达26.49%;其C/N<60时,平均增产率为13.73%,显著高于C/N≥60的平均增产率.将生物炭施入酸性或中性土壤中,更能发挥其增产效应.当施炭量为10~20 t·hm^(-2)时,小麦和玉米的平均增产率最大;施炭量为15~25 t·hm^(-2)时,水稻平均增产率最大.但是,不同施炭水平的水稻增产率相近,可考虑损失部分产量,适当减施以兼顾经济效益.此外,生物炭增产效应会随施用年限增加而不断减弱,一般3 a后增产不显著.SEM表明生物炭施用量不仅直接影响主粮作物产量,还通过改善土壤肥力间接影响主粮作物产量,而生物炭C/N和pH仅通过改善土壤肥力影响主粮作物产量.因此,今后在生物炭的应用中,优先考虑将其施于低肥力的酸性或中性土,其C/N和pH分别控制在60以下和7~8,并综合考虑土壤条件、生物炭特性和田间管理措施以使主粮作物产量最大化.研究可为生物炭的推广与合理应用提供科学依据与理论基础. | 于滨杭 姬建梅 王丽学 刘静 高欢 刘丹 | 2023 | 环境科学2023,44,1: | 3 |
| 15 | 增苗减氮对稻田氮素流失及利用效率的影响显示文摘研究旨在探讨增苗减氮的栽培方式对水稻的氮素流失及吸收利用的影响,为水稻氮磷流失防控奠定基础。采用小区试验研究了不同增苗减氮处理对地表径流氮素流失、水稻氮素吸收量和利用效率、土壤氮素平衡的影响。结果表明,随着施氮量的减少和秧苗数的增加总氮流失量显著降低,插秧前流失量占全生育期60%以上,总氮流失量最高为常规处理(T2)达到11.80 kg/hm^(2),T3~T6处理比T2降低13.42%~53.52%。与T2处理相比,T3~T6处理氮肥农学效率提高2.86%~28.99%,偏生产力提高3.40%~24.98%。随着施氮量的降低和秧苗数的增加氮素盈余量降低,T2~T6处理氮素盈余量分别为20.55 kg/hm^(2)、15.23 kg/hm^(2)、16.10 kg/hm^(2)、6.33 kg/hm^(2)和-10.62 kg/hm^(2)。该试验表明适度的增加秧苗密度、减少氮肥投入能够减少氮素流失,提升氮素利用效率,保障土壤氮素平衡。 | 谷学佳 王玉峰 孙阳 周雪全 曾媛 王军 司洋 | 2021 | 中国农学通报2021,37,9: | 2 |
| 16 | 大豆和玉米影响后茬作物氮素供应的研究进展显示文摘【目的】为提高轮作系统的生产力和土壤肥力的可持续性,我们从作物根系形态、残留养分有效性和土壤结构等方面,综述了大豆和玉米生产对土壤物理特性和后茬作物氮素供应能力的影响机理及原因。【主要进展】大豆根系呈网状分布,分枝侧根多,生长过程中新老根频繁更替,收获后土壤团聚体由原来的简单形态变为多级复合形态,团聚体内部孔隙增多,利于后茬作物的根系发育。大豆形成的稳定土壤团聚结构也是土壤氮素循环的良好基础,可有效提升土壤有机氮的总矿化和转化量,增强土壤对后茬作物的供氮潜力。玉米生产一般氮肥施用量较高,故收获后残留在土壤中的肥料氮相对较多。残留氮以NO;-N和微生物氮形态存在的比例高,由于NO;-N在土壤中不稳定、易损失,因此,不易于为后茬利用。大豆秸秆C/N低,翻压还田后易于被土壤微生物利用,加速土壤氮循环,易于后茬作物的吸收利用。加之豆科作物生长过程中死亡的根瘤和根形成的沉积物数量大,根系分泌物含有较高的甘氨酸和丝氨酸,且根际沉积物C/N较低,更易矿化转化为后季作物的重要氮源。因此,大豆较玉米更有利于后茬作物的生长和氮素营养。【展望】为更好地利用轮作优势,需要在以下几方面加强研究:提高大豆残留氮素高效利用的关键驱动因素比例;减少玉米收获后土壤残留氮素损失的氮素管理方法;残留氮素转移转化过程中的根–土–微生物互作机制。由于秸秆腐解会加快土壤有机碳的释放,因此减少大豆秸秆还田带来的轮作周年CO_(2)等温室气体的排放,提高土壤的碳汇功能也将成为今后研究重点。 | 耿赛男 李岚涛 苗玉红 谭金芳 王宜伦 | 2022 | 植物营养与肥料学报2022,28,5: | 2 |
| 17 | The breeding of japonica rice in northern China: An 11-year study(2006–2016)显示文摘The world’s population is facing food shortages due to climate change and the competition for arable land between food and energy crops.Many national and international projects to develop'super rice'cultivars were established in recent decades to attain a‘third leap forward’in rice production.In order to evaluate the breeding process in northern China,an 11-year tracking survey of japonica rice breeding,which involved a total of 520 rice accessions and 67 test plots,was completed in this study.The results showed that the yields of these accessions had increased stably,which was similar to control check varieties(CKs).The breeding strategy reduced the panicle number and increased the grain number per panicle through an increase of spikelet density(number of grains per centimeter on the panicle).This high spikelet density benefits not only the yield but also the blast resistance and amylose content.At higher latitudes,the preferred rice accessions had slim grain shape and extended growth period.In the middle latitudes among the test plots,the breeders focused on reducing the amylose content to improve the cooking quality of the rice accessions.Yield and blast resistance were the two highest priorities during the breeding selection process.The present study evaluated the breeding process in northern China during the last decade,which may lead to new insights into the future of rice breeding. | CUI Yue ZHU Meng-meng XU Zheng-jin CHEN Wen-fu | 2020 | Journal of Integrative Agriculture2020,19,8: | 1 |
| 18 | 大棚黄瓜秸秆原位还田对番茄生长及土壤环境的影响显示文摘大棚黄瓜秋茬拉秧后,分别设置秸秆原位还田(T1)、原位还田增施氮肥(T2)、秸秆不还田对照(CK)3个处理,第二年春茬种植番茄,研究其对番茄生长和土壤环境的影响,旨在明确高寒地区大棚蔬菜秸秆原位还田的可行性。结果表明,大棚黄瓜秸秆原位还田与原位还田增施氮肥均显著促进番茄生长并提高番茄品质和产量,原位还田与原位还田增施氮肥处理的产量与不还田对照相比分别提高20.7%和34.4%;与对照相比,原位还田及原位还田增施氮肥处理土壤pH显著提高,电导率显著降低,同时养分含量显著上升,增加了土壤有机碳、全氮含量,提高土壤酶活性,但原位还田处理在前期抑制番茄生长,降低土壤硝态氮、全氮含量及土壤脲酶活性。综上,大棚黄瓜秸秆还田可行,其中秸秆原位还田增施氮肥效果最佳。 | 吴凤芝 王叶群 王慧敏 李一诺 高梓雪 | 2022 | 东北农业大学学报2022,53,12: | 1 |
| 19 | 不同秸秆利用方式对黑土团聚体及其腐殖物质的影响显示文摘为探讨秸秆的不同利用方式还田对黑土肥力的影响,通过5年田间试验,研究了黑土连续施用玉米秸秆、生物质炭和牛粪配施化肥对土壤团聚体及其腐殖物质组成的影响。结果表明:与无化肥和有机物料添加对照处理相比,单施化肥(NPK)、NPK+生物质炭(BC)、NPK+牛粪(CM)和NPK+秸秆(CS)处理显著促进了>0.25 mm大团聚体的形成;与NPK相比,NPK+BC、NPK+CM和NPK+CS处理均显著提高了土壤总有机碳、胡敏酸与胡敏素含量,也显著增加了大团聚体与微团聚体中有机碳以及胡敏酸与胡敏素含量。不同秸秆利用方式之间相比,施用生物质炭更有利于提高土壤总有机碳和胡敏素的积累,而秸秆直接还田处理更有利于土壤胡敏酸的形成。连续5年施用秸秆、秸秆生物质炭和牛粪的田间试验促进了黑土良好结构的重建,从而提升土壤物理保护有机碳的潜力及有机碳的稳定性,同时也促进了土壤胡敏酸和胡敏素的积累,改善了土壤有机质品质,提高了土壤肥力,实现了提升黑土肥力与固碳的协同效应。 | 林欣欣 刘思佳 关松 张晋京 任军 蔡红光 刘日月 | 2023 | 吉林农业大学学报2023,45,5: | 0 |
| 20 | 生物炭和聚丙烯酰胺施用对土壤有机碳含量的影响及生态经济效益分析显示文摘为探究在黄河故道区中低产田平衡作物生产力、经济效益和生态可持续性的综合改良方案,通过田间试验方法,设置耕作方式、聚丙烯酰胺(PAM)施用、生物炭施用3个因素各2个水平,共8个处理,对作物产量、土壤有机碳(SOC)含量、土壤团聚体组成、净生态经济效益(NEEB)等指标进行分析。结果表明,生物炭施用分别提高SOC含量、大团聚体含量和作物产量6.7%~23.3%、1.7%~10.3%和1.74%~5.14%(P<0.05)。每提升1%的大团聚体含量,可提升0.3791 g/kg的SOC;每提升1 g/kg的SOC,可以提升0.1869 t/hm^(2)产量。耕作方式对SOC储量影响显著,相同物料施用下免耕处理的SOC储量、大团聚体含量和作物产量均高于旋耕处理,但仅施PAM处理对SOC含量、大团聚体含量及产量无显著影响(P>0.05)。线性回归模型表明,SOC含量分别与大团聚体含量和作物产量呈极显著正相关关系(P<0.01),表明提升土壤团聚性和SOC含量是作物增产的关键因素。免耕条件下,PAM与生物炭配施处理下的SOC含量、产量均为最高,分别为11.95 g/kg和1.11 t/hm 2,且温室气体排放成本为各处理中最低,可作为兼顾作物生产力和生态效益的改良方案,但由于投入成本提高,生物炭与PAM配施措施下的农户经济效益和NEEB较对照均显著降低,因此从粮食安全及生态改善角度考虑,应完善生态补偿机制,以调动农户积极性,促进改良措施落地。 | 刘昊贶 徐聪 孙丽 朱翰绅 李冠霖 汪吉东 张永春 | 2023 | 江苏农业科学2023,51,12: | 0 |