秸秆覆盖与深松垄作对土壤水分变化的影响

Effects of Straw Mulching and Deep Scarification on Soil Moisture Variation in Heilongjiang Province

试验通过将传统垄作秸秆覆盖(M_1)、传统垄作不覆盖(M_2)、深松垄作不覆盖处理(M_3)各生育期土壤含水率,以及灌溉后连续三日土壤含水率进行对比,旨在得出不同处理对于土壤贮水量、耗水量以及土壤水分变化过程的影响。试验结果表明:对于全生育期的平均土壤含水率,M_1>M_2>M_3;当土壤水分较大时,土壤水分吸收情况M_3>M_2>M_1;对于保水效果,M_1>M_2>M_3;秸秆覆盖和深松处理都会对试验结果造成显著性差异,且M_1更显著。建议采用垄作、秸秆覆盖与深松处理相结合的方式来进行玉米种植。

Through the comparison of soil water content at different growth stages and soil water content for three consecutive days after irrigation of three treatments of bed-planting with strew mulching （M1 ）, bed-planting without strew mulching （ME ） and bed-planting with deep scarification （ M3 ）, the purpose of this paper is to determine the effect of different treatments on soil water storage, water consumption and soil water change. The results show that the rank of average soil water content is M1〉M2〉M3 for the whole growth period; when the soil water content is large, the rank of soil water uptake is M3〉 M2〉M1; the rank of water retention effect is MI〉M2〉M3; straw mulching and deep scarification will cause significant differences in test results, and more significant for M1. It is recommended that maize cultivation is conducted in a combination of ridge tillage and straw mulching.