Effects of application of controlled\|releasing bulk blending urea on yield, quality and nitrogen utilization efficiency of rice

›› 2011, Vol. 23 ›› Issue (5): 0-987.

• 环境科学 •

Effects of application of controlled\|releasing bulk blending urea on yield, quality and nitrogen utilization efficiency of rice

WU Shao-fu;HAN Ke-feng;WU Liang-huan;*;SHI Qi-wei;ZHOU Yong-liang;SHEN Jing;GAO Xing-you;GU Hao-nan

1Shaoxing Station of Agricultural Technique Popularization, Shaoxing 312000, China;2Ministry of Education Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029, China；3 Shaoxing Central Station of Agricultural Technique Popularization, Shaoxing 312000, China

Received:1900-01-01 Revised:1900-01-01 Online:2011-09-25 Published:2011-09-25

Abstract

Abstract: Effects of application of controlled\|releasing bulk blending urea on rice yield, quality and nitrogen utilization efficiency were studied under the field conditions. At the same N rate, the differences of rice yield between each treatment were not significantly except for the treatment of CRBU+PU and PU1. Under the condition of reducing 30% N rate, rice yield of 70% CRBU was significantly deceased, but not for 70% (CRBU+PU). Nitrogen use efficiencies of CRBU, CRBU+PU, 70% CRBU and 70% (CRBU+PU) were 30.9%, 39.6%, 24.0% and 38.1%, respectively. Difference of nitrogen use efficiency between the treatments of CRBU+PU and 70% (CRBU+PU) were significant, but not between the treatments of CRBU and 70% CRBU. More economic benefits of rice and higher crude protein in the rice and brown rice rate were found in the treatment of CRBU+PU．

Key words: rice, controlled-release bulk blending urea, yield, quality, nitrogen use efficiency

WU Shao-fu;HAN Ke-feng;WU Liang-huan;*;SHI Qi-wei;ZHOU Yong-liang;SHEN Jing;GAO Xing-you;GU Hao-nan. Effects of application of controlled\|releasing bulk blending urea on yield, quality and nitrogen utilization efficiency of rice[J]. , 2011, 23(5): 0-987.

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Effects of application of controlled\|releasing bulk blending urea on yield, quality and nitrogen utilization efficiency of rice

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