摘要
用杂交水稻中优679为试验材料,研究氮肥运筹对晚稻产量和氮素利用率的影响。结果表明,在目标产量7 500 kg/hm2,总施氮量150 kg/hm2条件下氮肥运筹不同处理中,以基蘖肥∶穗肥=6∶4且基肥采用碳铵深施方式,其实际产量、齐穗后干物质生产量、成熟期干物质积累量、氮素利用率等均为最高。
The effects of nitrogenous fertilizer management on the yield and nitrogen utilization efficiency in the late-season rice were studied by using the hybrid rice cv. Zhongyou 679 as the experimenting material. The result manifested that of all the nitrogenous fertilizer management treatments with the target yield 7 500 kg/hm^2 and total nitrogen application 150 kg/hm^2, the treatment, in which, base-tiller dressing： panicle dressing = 6 ; 4, and the fertilizer ammonium carbonate deeply served as basal dressing, was the best in regard to the practical yield, dry matter production yield after heading, dry matter accumulation yield, and nitrogen utilization efficiency.
出处
《广西农业生物科学》
CSCD
2007年第4期312-316,共5页
Journal of Guangxi Agricultural and Biological Science
基金
国家粮食丰产科技工程项目(2004BA520A03)
关键词
氮肥运筹
干物质生产量
干物质积累量
氮素利用率
nitrogenous fertilizer management
dry matter production yield
dry matter accumulation yield
nitrogen utilization efficiency
