摘要
应用∑X1=∑X2 =…… =∑X8=∑X13 =…… =∑X83 =∑X1X2 =…… =∑X7X8=∑X12 X2 =…… =∑X1X82=…… =∑X6X7X82 =…… =0的代码八元二次回归设计施肥试验 ,研究水稻在基肥、分蘖末期追肥、孕穗中期追肥、始穗期追肥的肥料用量的最佳组合效果。正常年份在潴育型水稻土上种植培矮 64S/E3 2 (单季稻 ) ,不同时期的最高产量施肥量(kg/hm2 ) ,基施 :N 14 0 .2、P2 O5163 .3、K2 O 13 1.2 ;分蘖末期追肥 :N 86.5 ;孕穗中期追肥 :N 96.7K2 O 10 0 .8;始穗期追肥 :N 3 5 .4K2 O 18.2。利用试验结果指导大面积的水稻施肥精度高 (施肥精度可达 95 %以上 ) ,具有高产量。
A fertilization experiment using ΣX 1=ΣX 2=...=ΣX 8=...=ΣX 1 3=...=ΣX 8 3=ΣX 1X 2=...=ΣX 7X 8=...=ΣX 1 2X 2=...=ΣX 7X 8 2=...=ΣX 6X 7X 8=...=0 code regressive design can reduce the amount of handling and simplify the complicated operations.The best combinational effect of the quantity and time of fertilization at the end of tiller stage,in the middle of boot stage and at the begainning of heading stage for rice was studied.
出处
《土壤通报》
CAS
CSCD
北大核心
2002年第4期288-292,共5页
Chinese Journal of Soil Science
关键词
水稻
定时定量施肥
回归方程
高精度施肥
Rice
Fixed quantity and time
Regressive equation
High precision.
