河南省不同轮作区双低杂交油菜氮磷钾肥的效应研究

蔡东芳,王建平,张书芬,何俊平,曹金华,文雁成,赵磊,王东国,朱家成

Effects of N, P and K Fertilization on Rapeseed Yield in Different Rotating Areas of Henan Province

Dongfang Cai,Jianping Wang,Shufen Zhang,Junping He,Jinhua Cao,Yancheng Wen,Lei Zhao,Dongguo Wang,Jiacheng Zhu

表1 各试验点土壤主要理化性质

Table 1 Main physical and chemical properties of the soils in three trial points

试验点 Trial point 碱解氮 Available N (mg/kg) 速效磷 Available P (mg/kg) 速效钾 Available K (mg/kg) 有机质 Organic matter (g/kg) 潢川1 Huangchuan 1 133.50 12.89 58.44 20.35 潢川2 Huangchuan 2 138.79 3.33 49.62 21.76 南阳 Nanyang 125.57 42.86 142.23 20.50