膜侧冬麦土壤水分温度时空变化规律研究

Research on Temporal and Spatial Variation for Soil Moisture and Temperature of Membrane Side Winter Wheat

膜侧冬麦是小麦栽培技术上的一项创新技术,具有极显著的增产、保水、增温效应,对其土壤水分温度的研究具有一定的理论及现实作用,大量研究都集中研究了不同种植方式水分温度的变化,对膜侧冬麦种植这一种方式的不同水分温度的研究较少,通过对其水分温度的研究,初步得出:膜侧土壤水分平均比膜内增加9.1%,膜侧土壤水分的垂直变化各层次土壤含水量都高于膜内,0～20cm膜侧和膜内土壤水分变化最大;土壤水分不同层次的日变化变化幅度总体趋势为膜侧大于膜上,膜上、膜侧峰值几乎同时出现在20:00,最低值膜侧14:00,膜上比膜侧稍提前。膜上不同层次土壤温度明显高于膜侧,膜上土壤温度日变化幅度明显大于膜侧,浅层的日变化幅度大于深层的,膜上膜侧温度日变化得出最低温度同时出现在8:00,最高温度膜上15cm比膜侧提前2h达到。

Membrane side winter wheat cultivation technique is one new technology,have extremely notable increasing yield,protect water, increase temperature effect,the research has the certain theory and real effect,The results show that beside membrane soil moisture increas- ing 9.1% compared with under the film for membrane side winter wheat,The bedside membrane soil moisture are higher than under mem- brane every layer for the soil moisture perpendicularity changes,Layer 0～20 cm,the .soil moisture change is rnaximum;The soil moisture daily change trend is beside membrane higher than under membrane every layer,peak value appears nearly at the same time,at 20:00,mini- mum value under membrane is earlier than beside membrane,The soil temperature under membrane are higher than beside membrane different layer,Maximum temperature under membrane reacher than beside membrane for 2 hour.