渗水地膜覆盖对冬小麦土壤水分及产量影响研究

Studies on Ecological Effect of Water-Permeability Plastic Membrane Mulching in Rainfed Wheat Field

试验采用渗水地膜覆盖、普通地膜覆盖和露地3个处理,研究了三者的水分、产量效应。结果表明:全生育期内渗水地膜的渗水、保墒、提墒作用均优于其它两种处理,其保墒、提墒效应在表土层最为明显,土壤含水量较普通地膜平均增加0.70个百分点;渗水地膜覆盖与普通地膜覆盖产量差异达0.01极显著水平,较普通地膜覆盖增产505.30kg/hm2,产量提高了13.20%;渗水地膜的水分利用效率最高,露地最低。渗水地膜水分利用效率比露地提高25.1%,比普通地膜提高8.6%。

In this experiment it use three treatments, including water- Permeability Plastic Membrane Mulching, common plastic film mulching and open grounding yield, studying their many effects of three treatments. The result show： water- permeability plastic membrane could make rain penetrate into soil, prevent water evaporation from topsoil in all growing period, it is most evident in the topsoil, soil moisture content of water - Permeability Plastic Membrane increased 0.65 percent than common plastic film during the whole growing period. The yield of the water -permeability plastic membrane mulching was hi her 505.3kg/hm^2 than common plastic film mulching yield and increased by 13.2%, their variance reaching 0.01 significant level. In the same condition, Water utilizatiin of water - permeability plastic membrane mulching was higher than that of the other two treatments, increased by 25.1% than open ground and increased by 8.6% than common plastic film mulchuing.