摘要
氮肥对水稻植株有明显影响 ,无氮区植株矮小、分蘖少 ,但生殖生长也明显提前 ,抽穗期提早 4～ 6天 ;目前栽培水平条件下 ,碳酸盐黑钙土区井灌水稻施用氮肥的最佳用量为 115 5kg/hm2 。表 2 ,参 2。
Nitrogen fertilizer has a significant effect on rice plants,In the plot of nitrogen-free,the rice plants are small with fewer tillers,but their reproductive growth phase moves up remarkably and heading stage is 4～6 days earlier;Under the condition of present cultivation level,the optimum amount of nitrogen fertilizer required in the rice field with well irrigation in black calcareous soil area is 115.5kg/hm 2.
出处
《农业系统科学与综合研究》
CSCD
北大核心
2001年第1期79-80,共2页
System Sciemces and Comprehensive Studies In Agriculture
