氮磷钾施用量与小葱产量的相关性研究  

Study on Relevance Between the Application Rate of N.P.K and Output of Shallot

作　　者：卢精林[1] 保庭科[2] 殷学贵[2] 王勤礼[2] 杨斌[2] 张春梅[2] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨凌712100 [2]甘肃河西学院园艺系,甘肃张掖734000

出　　处：《甘肃农业科技》2005年第6期36-38,共3页Gansu Agricultural Science and Technology

基　　金：甘肃省教育厅资助项目(038-01)的部分研究内容

摘　　要：采用三因素二次回归通用旋转设计,对氮磷钾施用量与小葱产量的相关性进行了研究,并建立了三元二次回归方程:Y=44.68+1.01X1+1.18X2+0.81X3-0.78X21-0.75X22-0.71X23-0.72X2X3三因素皆与产量存在相关性,其中磷肥对产量的影响最大,氮肥次之,钾肥较小。经计算机模拟,最佳施肥量为N229.0kg/hm2、P2O5239.2kg/hm2、K2O112.5kg/hm2,小葱产量最高可达45452.35kg/hm2。By means of quadratic general rotational combination design,the relevance between of the application rate of N. P. K and output of shallot was studied and the regression equation was set up:Y=44.68+1.01X_1+1.18X_2+0.81X_3-(0.78)X^2_^-0.75X^2_2-0.71X^2_3-0.72X_2X_3.Analysis results indicated that:these three factors had relevance to output of shallot, phosphate fertilizer affected the output to the highest degree, nitrogenous fertilizer had an fewer effect and potassium fertilizer seldom influenced the shallot output.By simulation with computer,the best use amount of fertilizer was N 229.0 kg/hm^2,P_2O_5 239.2 kg/hm^2,K_2O 112.5 kg/hm^2 respectively,the output of shallot could reach 45 452.35 kg/hm^2.

关 键 词：小葱 氮磷钾 相关性 产量 研究 

分 类 号：S633[农业科学—蔬菜学] S143[农业科学—园艺学]