玉米全膜双垄覆盖“一膜两季”模式效应研究

A Study of Effect of "A Film Two Season " Mode for Corn of Double Ridge Whole-mulching

在固原市原州区开城镇深沟村旱作示范基地进行了玉米全膜双垄覆盖“一膜两季”免耕栽培模式试验研究。试验结果表明：该项技术与常规半膜覆盖相比前期0～20cm土壤含水量增加4．2％，平均单产达到9457．2kg／hm^2，增产29．3％，节本17．8％，纯收益增加71．2％；比玉米全膜双垄覆盖沟播栽培前期0—20cm的土壤含水量增加1.1％，增产0．9％，节本26．7％，纯效益增加12．7％，经济效益显著。

An experiment was conducted on the ＂a film two season ＂ no-tillage cultivation mode for corn of double ridge whole-mulching at the dry farming demonstration base at Shengou village in Yuanzhou district in Guanyuan municipality. The result showed that compared with the common half-mulching technology, in the early period the technology could increase the moisture content of the 0-20 cm soil by 4.2%, the average yield reaching 9 457.2 kg/hm^2,increasing by 29.3%, save the cost by 17.8% and increase the net benefit by 71.2%; compared with the corn of double ridge whole-mulching furrow sowing cultivation, in the early period the moisture content of the 0-20 cm soil could be increased by 1.1%, the yield be increased by 0.9%, the cost be saved by 26.7% and the net benefit be increased by I2.7%. The economic benefit was significant.