摘要
根据辉县市七个乡镇１１３块夏玉米施肥量对产量影响的调查数据，分别建立低、中、高三种肥力水平土壤的氮、磷效应模型，并据此计算出最大施肥量及经济最佳施肥量。反馈试验证明，模型预报精度较高，氮、磷优化施肥配方，具有应用推广价值。
According to data of investigation on impact of fertilizer on yield of summer maize in 113sites of 7 towns in Huixian city,three effect models standing for low.middle and high yield levels have been established to describe impacts of soil N and P on summer maize,and maximium and economic optimal amount of fertilizing is calculated. It is proved that forecasting precision of models are high according to the feedback experiments.
出处
《河南职业技术师范学院学报》
1994年第3期24-27,共4页
Journal of Henan Vocation-Technical Teachers College
关键词
夏玉米
施肥
肥效
施肥配方
玉米
summer maize, fertilizer model, fertilizing retion, feedback experiment
