宁夏中部干旱带旱地覆膜免耕玉米栽培模式优化研究  

A Study on Cultivation Mode of Dry Land Film-mulching No Tillage Maize in Middle Arid Zone of Ningxia

作　　者：金龙 李海洋 黑旭明 

机构地区：[1]宁夏同心县农业技术推广中心,宁夏同心751300

出　　处：《宁夏农林科技》2017年第12期7-9,20,共4页Journal of Ningxia Agriculture and Forestry Science and Technology

摘　　要：对宁夏中部干旱带旱地覆膜免耕玉米种植模式进行研究,采用二次正交旋转设计对玉米栽培关键因素肥料施用量、最佳种植密度和最适播种期进行计算机寻优模拟预测。结果表明,在宁夏中部干旱带进行旱地覆膜免耕玉米种植,要实现经济产量≥5 250 kg/hm^2、蛋白质含量≥11%、淀粉含量≥66%、经济纯收益≥7 500元/hm^2的优化栽培措施综合方案为:播种期4月16日~4月23日,播种密度27 735~33 105株/hm^2,施肥时期6月8日~6月20日,施N 112.05~121.35 kg/hm^2,施P2O576.8~82.35 kg/hm^2。生产中夺取高产优质高效的重点是把握播种期、密度,合理进行氮肥用量和施用时期的调控。A Computer optimization simulation and prediction on the key factors in the cultivation of the dry land film-mulching no tillage winter wheat such as quality of fertilizers, the best density and sowing date were carried out by using the quadratic rotation orthogonal design in the experiment. The results showed that in the middle arid zone of Ningxia,under the dry land film-mulching no tillage cultivation mode, for fulfilling the objectives of yield of higher than 5 250 kg/hm^2, grain protein content of higher than 11% and starch content of higher than 66%, economic returns of higher than 7500 yuan/hm^2, the optimization agronomic scheme was that the sowing date should be April 16 th to 23 th, the sowing density should be 27 735~33 105 plants/hm^2, the fertilization date should be June 8 th to 20 th, the application rate of pure N should be 112.05~121.35 kg/hm^2, the P2 O5 should be 76.8~82.35 kg/hm^2. The suitable density, sowing date, quality and date of fertilization could increase the yield and improve the quality.

关 键 词：覆膜免耕 玉米 栽培模式 

分 类 号：S513[农业科学—作物学]