宁夏引黄灌区膜下滴灌春玉米适宜施肥量试验研究  

Experimental Research on Fertilizer Requirement of Spring Maize under Drip Irrigation in Ningxia Irrigation Area

作　　者：黄兴法[1] 赵楠[1] 任夏楠[1] 杨建国[2] 纪立东[2] 李光永[1] 

机构地区：[1]中国农业大学水利与土木工程学院,北京100083 [2]宁夏农林科学院农业资源与环境研究所,银川750002

出　　处：《灌溉排水学报》2015年第12期28-31,共4页Journal of Irrigation and Drainage

基　　金：农业部公益性行业项目(201203012-3);"十二五"农村领域国家科技计划课题(2011AA100507)

摘　　要：为研究与玉米膜下滴灌相适应的施肥制度,在宁夏引黄灌区进行田间玉米膜下滴灌试验,通过"3414"肥料效应试验研究16组不同氮、磷、钾施肥量处理下的玉米需肥规律。结果表明,滴灌条件下,对不同单因素肥料的施肥量和对应产量进行一元二次方程回归拟合,得出氮、磷、钾肥最佳施肥量分别为255、90、37.5kg/hm^2,其产量最大为12 929kg/hm^2,且氮、磷、钾肥对应的农学效率分别为19%、58%、88%,表明适量增加钾肥施用量对产量的增加非常有效;该处理在提高产量的同时,也提高了肥料利用效率,可以作为当地同等地力条件下的最优施肥制度。The＂3414＂fertilizer effect experiment method was carried out with 16 treatments under different application rates of nitrogen,phosphorus and potash fertilizer,in order to determine the fertilizer requirement and fertilizing scheduling of spring maize under mulched drip irrigation in Ningxia Yellow River Irrigation Area.The results showed that,through analyzing the quadratic regression model between fertilizer application andcorresponding yield,the optimum fertilizer application rates of N,P2O5 and K2O were 255,90,37.5kg/hm^2,respectively,and the yield was 12 929kg/hm^2.The agronomic efficiencies of N,P2O5 and K2O were 19%,58%,88%,respectively,and the agronomic efficiency of potash fertilizer was the highest,which showed that applying the right amount potash fertilizer was beneficial to increasing yield of wheat,and the treatment with fertilizer application rates of N,P2O5 and K2O of 255,90,37.5kg/hm^2,respectively,was the optimal treatment with both highest yield and agronomic efficiency of fertilizers.

关 键 词：春玉米 膜下滴灌 需肥规律 施肥制度 

分 类 号：S513[农业科学—作物学] S275.6