沈稻3号综合农艺措施的数学模型

为了进一步挖掘沈稻3号增产潜力,采用规范化设计,研究了播种密度、插秧穴距、施氮量、施磷量和施钾量对沈稻3号产量的影响。结果表明,施氮量对沈稻3号产量的影响较大,在生产中应特别重视合理施用氮肥,合理搭配播种密度与施钾量、施氮量与施磷量是实现高产的重要措施。采用最佳模拟配合法,建立大于9375kg/hm2的高产栽培农艺组合方案为播种密度76.08～78.35g/m2,插秧穴距14.65～15.21cm,施氮量161.00～164.55kg/hm2,施磷量39.92～41.51kg/hm2,施钾量145.23～151.27kg/hm2。

A mathematical model of composite agronomic measures for Shendao-3

In order to explore the potential yield of Shendao-3,the experiment was conducted in 2004.In the experiments,effects of sowing density,hill space,and amount of nitrogen,phosphorus and potassium fertilizer on yield were investigated.The result showed that the amount of nitrogen for high-yielding plant population of Shendao-3 should be appropriate and it was the most important to affect the yield among the treatment factors.Meanwhile,the interaction between sowing density and the amount of potassium,the amount of nitrogen and phosphorus played an important role on the yield.