半干旱偏旱区旱作地膜玉米密度及施肥研究  

Research in how to space and manure the field while planting dryland maize by covering plastic film in different precipitation arid area

作　　者：王永年 任稳江 符国忠 

机构地区：[1]甘肃会宁县农技推广中心,甘肃会宁730700 [2]会宁县农科所,730700

出　　处：《干旱地区农业研究》2000年第1期43-47,共5页Agricultural Research in the Arid Areas

基　　金：甘肃省"九五"计划!"陇中粮食高产栽培研究"

摘　　要：1997年～ 1998年在半干旱偏旱区的会宁 ,对 30 0 mm、350 mm和 50 0 mm不同降水带区地膜玉米种植密度和施肥量进行了回归模拟组合寻优。初步提出了在正常年份不同降水带区最佳产量 ;并从不同区土壤供肥状况和肥料利用量化指标进一步论证了这一结果的可靠性。From 1997 to 1998 in the county of Huining, located in the area having no enough rainfull, we hare maize planted by corering field with plastic film in different precipitation areas where annual rainfall is 300 mm, 350 mm and 400 mm. To find a best way for maize planting, we hare tried planting maize spacing differently and manu ring the field in different way. and hare brought up a practicable program for plating maize with best spacing in the rows and the volume of manure in different precipitation areas under normal conditions. The program nas prored to be practicable by means of how spreading manure according different soil. It is helpful to us to plant maize by corering field with plastic film in a half arid area. It is also important for us to popula rize the agricultural technique.

关 键 词：地膜玉米 半干旱偏旱区 施肥量 栽培密度 

分 类 号：S513.044[农业科学—作物学] S513.062