摘要
运用肥料效应函数法对库车县的棉花施肥进行了研究 ,得出了肥料效应函数方程。结果表明 :试验的最高产量为 2 175 .0kg·hm-2 ,最高产量施肥量尿素为 5 35 .0kg·hm-2 ,三料磷肥为 337.5kg·hm-2 。最佳经济产量为 2 170 .5kg·hm-2 ,最佳经济产量施肥量尿素为 5 2 5 .5kg·hm-2 ,三料磷肥为 30 3kg·hm-2 。
The paper studies preliminarily prescription fertilization of cotton in kuqa county by method of response function to fertilizers.The result showes the highest output of test is 2 175 kg·hm -2 ,the highest quantities of fertilizers application are that CO(NH 2) 2 is 535 kg·hm -2 ,Ca(H 2PO 4) 2 is 337.5 kg·hm -2 .the optimum economic output is 2170.5kg·hm -2 .the optimum quantities of fertilizers application are that CO(NH 2) 2 is 525.5 kg·hm -2 , Ca(H 2PO 4)2 is 303kg·hm -2 .
出处
《新疆农业大学学报》
CAS
2002年第3期52-53,共2页
Journal of Xinjiang Agricultural University
关键词
棉花
效应函数
施肥量
cotton, response function to fertilizer of prescription fertilization, quantities of fertilizers application
