摘要
运用二次回归正交旋转组合设计,在春播条件下研究黔苦2号苦荞籽粒产量与其播种量及N、P、K肥施用量间的关系。通过试验,建立了黔苦2号籽粒产量与主要农艺措施的数学模型,通过对模型的解析和模拟寻优分析。结果表明:黔苦2号籽粒产量高于2800kg/hm2的优化栽培技术方案:播种量67.14～74.93kg/hm2,施N量28.88～40.12kg/hm2,施P2O5量179.11～210.89kg/hm2,施K2O量43.94～61.06kg/hm2;试验4因子对籽粒产量影响的程度大小为播种量>施K2O量>施P2O5量>施N量。
Using quadratic regression universal rotary combination design, we studied relations between grain yield of Qian-bitter-buckwheat 2 which was planted in spring and four main agronomic measures （seeding rate, N-application rate , P2O5-application rate and K2O-application rate）.Mathematics model was set up by experiment.By simulating the model and simulation-optimization analysis,we put forward cultivation techniques programme （buckwheat grain yield ≥ 2800kg/hm^2） ： seeding rate is 67.14-74.39 kg/hm^2, N-application rate is 28.88-40.12kg/hm^2, P2O5-application rate is 179.11 -210.89kg/hm^2, K2O-application rate is 43.94- 61.06 kg/hm^2. The results showed that the effect on grain yield is： seeding rate〉K2O-application rate〉P2O5- application rate〉N-application rate.
出处
《中国农学通报》
CSCD
2008年第9期210-213,共4页
Chinese Agricultural Science Bulletin
基金
国家农业科技成果转化资金项目"苦荞黔苦系列新品种示范"(2006GB2F200266)部分研究内容
关键词
黔苦2号
春播
籽粒产量
农艺措施
Qian-bitter-buckwheat 2, planting in spring, grain yield, agronomic measures
