渗水地膜覆盖对冬小麦生理抗逆性及产量影响研究

Studies on Two Effects 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三个处理,研究了三处理下冬小麦的生理、产量效应。结果表明:渗水地膜覆盖提高了小麦各器官含水量、叶片的叶绿素含量及硝酸还原酶活性,降低了叶片脯氨酸含量和细胞膜相对透性,这说明了渗水地膜覆盖冬麦土壤水分状况好,抵抗逆境能力增强;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505.30 kg/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 uses three treatments, including water-Permeability Plastic Membrane Mulching, common plastic film mulching and open groundihg yield. Studying their many effects of three treatments. The result show. the water-permeability plastic membrane mulching increased chlorophyll content, intercellular Co2concentration, net photosynrhesis rate of winter wheat, reduced proline content of leaves and cell membrane relative permeability. The yield of the water-permeability plastic membrane mulching was hig her 505.3 kg/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 mulching.