玉米全膜双垄沟播效益与配套技术研究

经过3年不同覆膜方式效益试验研究，结果表明：0-20cm土壤温度为秋季全膜双垄沟播〉早春全膜双垄沟播〉播期全膜双垄沟播〉秋季半膜覆盖〉早春半膜覆盖〉播期半膜覆盖，0～20cm土壤含水量为秋季全膜双垄沟播〉早春全膜双垄沟播〉播期全膜双垄沟播〉秋季半膜覆盖〉早春半膜覆盖〉播期半膜覆盖，产量和效益为秋季全膜双垄沟播〉早春全膜双垄沟播〉播期全膜双垄沟播〉秋季半膜覆盖〉早春半膜覆盖〉播期半膜覆盖，秋季全膜双垄沟播比常规半膜覆盖增产25％-30％，优势十分明显。通过玉米不同补灌时期试验、不同海拔玉米品种试验、玉米密度试验、玉米大垄中间套种其他作物示范。初步完善了全膜双垄沟播栽培技术体系。

A Study of Benefit and Matching Technology for Double Ridge Whole-mulching Furrow Sowing Maize

The results of 3 years of the study of the benefit of different film-mulching modes showed that the trend of the change of the temperature of 0-20 cm soil was the double ridge whole-mulching furrow sowing in autumn〉the double ridge whole-mulching furrow sowing in early spring〉the double ridge whole-mulching furrow sowing during the date of seeding〉 half-mulching in autumn〉 half-mulching in early spring〉half-mulching during the date of seeding, the trend of the change of the moisture content of 0-20 cm soil was the double ridge whole-mulching furrow sowing in autumn〉the double ridge whole-mulching furrow sowing in early spring〉the double ridge whole-mulching furrow sowing during the date of seeding〉 half-mulching in autumn〉 half-mulching in early spring〉half-mulching during the date of seeding, the trend of the change of the yield and benefit was the double ridge whole-mulching furrow sowing in autumn〉the double ridge whole-mulching furrow sowing in early spring〉the double ridge whole-mulching furrow sowing during the date of seeding〉half-mulching in autumn 〉 half-mulching in early spring 〉half-mulching during the date of seeding. The yield of the double ridge whole-mulching furrow sowing in autumn was 25%~30% higher than that of the common half-mulching and the advantage was obvious. On the basis of the tests during the different supplementary irrigation periods for maize, the tests of maize va- rieties at different altitudes, the tests of maize planting density and the demonstration of the big ridge maize interplanting other croos, the double ridge whole-mulchinz furrow sowing cultivation technology system was improved tentatively.