Studies On Ecological And Yield Effect Of Water-permeability Plastic Membrane Mulching In Rainfed Wheat Field

Drought in Shanxi province is very serious. To seek a method of effective use of water Resource in the condition of limited water resource has become an important content of drought agricultural study. Water-permeability plastic membrane may be a new discovers to solve the problem. The experiment studied on some ecologic factors of wheat by mulching water-permeability plastic membrane, which effect on growth and development, physiological properties and the yield of wheat that have engaged in initial seek. The result showed:1.The water content of soil covered by water-permeability plastic membrane was higher than the other two seeding methods. Because water-permeability plastic membrane could make rain penetrate into siol, prevent water evaporation from topsoil. Grow for prior periods in the winter wheat, the effect of temperature-increasing and insulation of water-permeability plastic membrane mulching was superior to common plastic film mulchuing and its was lower than common plastic film mulchuing in final period. Water-permeability plastic membrane still reduces the extremely high-temperature regulating function and Make soil temperature comparatively steady.2.the water-permeability plastic membrane mulching promoted the growth and development of winter wheat all organs and its plant height, leafing number, tillering number, second roots, leaf area, and accumulation of population dry matter were always the highest in three treatments, so winter wheat of the water-permeability plastic membrane mulching can earlier mature and its single plant percentage of earbearing tiller was more than other two treatments.3.the water-permeability plastic membrane mulching increased chlorophyll content, intercellular co2 concentration, net photosynrhesis rate of winter wheat, reduced proline content of leaves and cell membrane relative permeability.4.the water-permeability plastic membrane mulching had eminent effect on increasing yield and income. The yield of the water-permeability plastic membrane mulching was hi her 505.3kg/hm2 than open grounding yield and increased by 13.2%, theirs variance reaching 0.01 significant level and The yield of the water-permeability plastic membrane mulching was hi her 952.0kg/hrrf than open grounding yield and increased by 30.0%, theirs variance reaching 0.01 significant level. The spike number per hectare, spike length, spike branch number. The grain number per ear. The grain weight per ear and 1000-grain weight of the water-permeability plastic membrane mulching were the highest in three treatment, and open ground were the lowest economic coefficient of the water-permeability plastic membrane mulching were not the highest in three treatment, open ground were the highest and the common plastic film mulching were the lowest.5.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.