摘要
2003-2004年采用二次通用旋转组合设计研究了氮、磷、钾不同施用水平对苇状羊茅鲜草产量的影响，获得优化回归模型为y=3426．86＋623．07x1＋220．75x3；主效应分析表明，增施氮、钾肥的增产效果十分明显，而增施磷肥的作用很小。经模拟寻优，获得年产鲜草4864kg／667m^2的施肥方案为每667m^2施纯N50kg、纯K2O55kg。
The mathematical model, y=3426.86 ＋ 623.07x1 ＋220.75x3 was built by using the quadratic general rotary combination design to investigate the effects of different application norm of N, P and K on fresh yield of Festuca arundinacea. The results showed that the fresh yield was significantly improved by applying of N and K, and 4864kg/667m^2 of fresh yield can be gained by applying 50kg/667m^2 of pure N and 55kg/667m^2 of pure K2O.
出处
《贵州农业科学》
CAS
2006年第2期62-65,共4页
Guizhou Agricultural Sciences
基金
贵州省科技攻关项目资助[黔科合农社字(2002)1113号]
关键词
苇状羊茅
黔草2号
规范化栽培
贵州
Festuca arundinacea
Qiancao 2
standardization cultivation
Guizhou
