摘要
本试验采用二次回归正交组合设计,通过田间小区试验研究了氮磷钾配合施用对青贮玉米的影响。通过主因素、单因素效应分析,定量地评价了氮肥、磷肥和钾肥用量与青贮玉米产量的关系,提出了目标产量的最优氮磷钾组合方案。从青贮玉米最大生物产量和经济效益综合考虑其最优氮肥(N)用量范围为308.4～365.0 kg/hm2,最优钾肥(K2O)用量范围为65.5～89.8 kg/hm2,磷肥(P2O5)用量最佳范围为100.1～117.0 kg/hm2。
The orthogonal combination design of quadratic regression was adopted in this experiment. Effects of interaction among nitrogen, phosphorus potassium coordinating on the organism yield of silage maize was studied by field experiment. Effect of N, P, K on the organism yield of silage maize were studied quantitatively based on main and single factors effect analysis. The range of N, P, K optimal composite scheme was 308.4 - 365.0 kg/ha, 100.1 - 116.0 kg/ha, 65.5 - 89.8 kg/ha. This result provided an optimum composite scheme of N, P, K for an aimed yield. Key woldS：
出处
《玉米科学》
CAS
CSCD
北大核心
2007年第1期128-131,146,共5页
Journal of Maize Sciences
基金
黑龙江省博士后基金项目(2003-2005)
关键词
青贮玉米
施肥
氮磷钾配合
产量模型
Silage maize
Fertilization
Optimum composite scheme
Model yield
