免耕探墒对土壤环境因素和旱地玉米产量的影响

对不同耕作方式下旱地玉米种植的试验结果显示，免耕探墒播种条件下2cm～7cm深处土壤容重较旋耕增加了4．31％，没有达到显著水平；免耕探墒播种降低了地温，提高了0era-20cm深处土壤的水分含量；免耕探墒播种产量为6591．82kg／hm2,较旋耕降低553．36kg／hm2，减产效果没有达到显著水平。由此说明，免耕探墒播种是旱地农业生产中有效的抗旱播种方法。

The Influence of No-tillage and Detective Soil Moisture on Soil Surroundings and Maize Yield in Dryland

ABSTRACT ： The test results of dryland maize cultivation under different tillage methods show that the soil bulk density in the depth of 2 cm-7 cm under no-tillage and detective soil moisture was increased by 4.31% comparing with rotary tillage, didn＇t reach significant level; no-tillage and detective soil moisture could reduce the soil temperature, and improve the soil moisture content in the depth of 0 cm-20 cm; the maize yield under no-tillage and detective soil moisture was 6 591.82 kg/ hm2, and was lower 553.36 kg/hm2 than rotary tillage, and the reduction effect didn＇t reach significant level. These results show that the no-tillage and detective soil moisture was an effective drought resistance sowing method in dryland agriculture.