氮磷钾施用量与洋葱产量的相关性研究  

Study on the Relationship between the Application Rate of N,P,K and the Yield of Onion

作　　者：卢精林[1] 保庭科[1] 殷学贵[1] 王勤礼[1] 杨斌[1] 张春梅[1] 秦良生 

机构地区：[1]河西学院园艺系,甘肃张掖734000 [2]张掖金海食品有限公司

出　　处：《长江蔬菜》2007年第1期45-46,共2页Journal of Changjiang Vegetables

基　　金：甘肃省教育厅资助项目(038-01)

摘　　要：采用3因素2次回归通用旋转设计,对N、P、K施用量与洋葱产量的相关性进行了研究,并分别建立了3元2次回归方程。结果表明:N、P、K皆有利于洋葱的形成,P对洋葱产量的影响较大,在土壤缺P地区应重视P肥的施用;3因素在影响洋葱产量上存在交互作用;经计算机模拟,N、P、K最佳组合方案为:12.5kg/667m2、20.0kg/667m2、3.0kg/667m2,洋葱产量最高可达7440.2kg/667m2。By means of quadratic general rotational combination design, a three-factor （N,P, K） experiment of culture was conducted in union. The regression equation of the relationship amount N, P, K and the effects on yield of union was established. The results indicated that： the effect of three factors on the yield of union increased by degree in the series of P,N,K. The interaction amount N, P, K was analyzed. By simulation with computer, the optimum combination of N, P,K for the highest yield of union were 187.5 kg·hm^-2 N ,300.0 kg·hm^-2 P.45.6 kg·hm^-2K respectively.

关 键 词：洋葱 N、P、K 相关性 产量 

分 类 号：S633.2[农业科学—蔬菜学]