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您的检索式：作者名="L. K. HENG"
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| 1 | Effect of Nitrogen Management on Yield and Water Use Efficiency of Rainfed Wheat and Maize in Northwest China显示文摘A field experiment with four treatments and four replicates in a randomized complete block design was conducted at the Changwu Experimental Station in Changwu County, Shaanxi Province, of Northwest China from 1998 to 2002. The local cropping sequence of wheat, wheat-beans, maize, and wheat over the 4-year period was adopted. A micro-plot study using 15N-labelled fertilizer was carried out to determine the fate of applied N fertilizer in the first year. When N fertilizer was applied wheat (years 1, 2 and 4) and maize (year 3) grain yield increased significantly (P<0.05) (>30%), with no significant yield differences in normal rainfall years (Years 1, 2 and 3) for N application at the commonly application rate and at 2/3 of this rate. Grain yield of wheat varied greatly between years, mainly due to variation in annual rainfall. Results of 15N studies on wheat showed that plants recovered 36.6%-38.4% of the N applied, the N remained in soil (0-40 cm) ranged from 29.2% to 33.6%, and unaccounted-for N was 29.5%-34.2%. The following crop (wheat) recovered 2.1%-2.8% of the residual N from N applied to the previous wheat crop with recovery generally decreasing in the subsequent three crops (beans, maize and wheat). | DANG Ting-Hui CAI Gui-Xin GUO Sheng-Li HAO Ming-De L. K. HENG | 2006 | Pedosphere2006，16，4： | 25 |
| 2 | Factors Determining Diagnostic Yield of Endoscopic Ultrasound Guided Fine-Needle Aspiration for Pancreatic Cystic Lesions: A Multicentre Asian Study显示文摘 | Lee Guan Lim Sandeep Lakhtakia Tiing Leong Ang Charles K. F. Vu Frederick Dy Vui Heng Chong Christopher J. L. Khor Wee Chian Lim Bhavesh Kishor Doshi Shyam Varadarajulu Kenjiro Yasuda Jennie Y. Y. Wong Yiong Huak Chan Min En Nga Khek Yu Ho | 2013 | Digestive Diseases and Sciences2013，，6： | 2 |
| 3 | Capsule Endoscopy in Patients with Implantable Electromedical Devices is Safe显示文摘 | Lucinda A. Harris Stephanie L. Hansel Elizabeth Rajan Komandoor Srivathsan Robert Rea Michael D. Crowell David E. Fleischer Shabana F. Pasha Suryakanth R. Gurudu Russell I. Heigh Arthur D. Shiff Janice K. Post Jonathan A. Leighton Hsu Heng Yen | 2013 | Gastroenterology Research and Practice2013，，： | 2 |
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