摘要
采用三元二次通用回归旋转组合设计,研究了密度、施氮、施钾肥与玉米新品种东315产量之间的关系,建立了数学模型,通过分析寻优得出639.1 kg/667 m2以上产量水平的农艺措施组合方案。在当前生产条件下,要获得高产,保证玉米新品种东315的密度是关键,注重施氮肥,配合施钾肥可以达到投资少、产量高、经济效益显著的目标。
The effects of N,K and planting density on the yield of maize variety Dong No.315 were studied with the application of ternary quadratic orthogonal regression rotary combination design.The mathematical model between the main cultivation factors and the output index was established.By computer simulating and optimizing,the optimal combinational scheme and high-yield cultivation model for yield above 639.1 kg/667 m2 of Dong No.315 were proposed.The result indicated that in the present agricultural production conditions suitable amounts of fertilizers of N,P could be combined with rational planting densities for Dong No.315.
出处
《西南农业学报》
CSCD
北大核心
2011年第2期466-470,共5页
Southwest China Journal of Agricultural Sciences
基金
农业科技成果转化资金
四川省育种攻关
四川省农科院青年基金(2008GB2F000276
2009GB2F000317)
关键词
玉米
新品种东315
栽培技术
农艺措施
Maize
Dong No.315
Cultivation technology
Agronomic practices
