旱作保墒不同栽培方式研究

在宁夏南部山区的固原市原州区开展旱作保墒不同栽培方式研究，结果表明，在不同覆膜方式下，秋季覆膜玉米产量最高为9735．0kg／hm^2，较常规半膜增产3796．5kg／hm^2，增幅为38．99％；以补充灌溉375m^3/hm^2时主副产品产量最高为2645．43kg／hm^2,增产11．1％，纯收益则补灌量225m^3／hm^2最高，为12769．5元；一膜两季栽培2年玉米平均单产达9374．9kg／hm^2，较对照增产2062．4kg／hm^2，增幅达28．2％；在全膜覆盖条件下玉米大垄中间套种大豆，水分生产效率提高1．20kg／（mm·hm^2），土地利用率提高43％，单产达10481．5kg／hm^2，经济纯收入提高40．39％。

Study on Different Cultivation Ways of Dry Land Soil Conservaton in Mountain Area of Southern Ningxia

The different cultivation ways of dry soil conservaton in mountain area of southern Ningxia was carried out. The resuhs showed that under the condition of different filming, the yield of autumn coated maize was the highest, being up to 97 350 kg/hm^2, and increased by 3 796.5 kg/hm^2 than conventional membrane. When the supplement irrigation was 375 m^3/hm^2, the yield of main by-product was the highest, being up to 2 645.43 kg/hm^2, and increased by 11.1%. When the supplement irrigation was 225 m^3/hm^2, the net income was the highest, being up to 12 769.5 yuan. The average yield of 2 years under the condition of a film two season planting was 9 374.9 kg/hm^2, and increased by 2 062.4 kg/hm^2 than control. When maize intercropped soybean under the condition of all membrane covering, water productivity was 1.20 kg/ （mm·hm^2）, and land utilization increased by 43%, per unit yield being up to 10 481.5 kg/hm^2, and economic net income increased by 40.39%.