模拟降雨条件下垄膜方式对土壤蓄水效应影响.

In order lo explore llie effect of different film mulching methods on soil moisture accumulation in dry fanning areas under simulated rainfall conditions, this paper analyzed the effects of different mulching methods mi soil water conditions under different rainfall conditions. The results show that, with the increase of simulated rainfall, the soil water storage in sandy loam and clay loam are increased, ridge covered (QLM)>half covered ridge (BLM) traditional flat (CKM). For the sandy loam, the increase of the total amount of corrugated mulch is 0.9-3.4 mm, and the flow efficiency is 10.5%-27.5%. The increase rate is 36.21%-95.65%. The yield of the raised bed is 0.6-2.1 mm, and the yield is 5%-15%, and the increase rate is 17.24%-55.26%. Compared with the traditional level, the total mulch is 1.7-6.8 mm. and the yield efficiency is 31%-45.83%, and the increase rate is 75.68%-95.77%. The yield of the raised bed is 1.4-4.2 mm higher than that of the conventional level, and the yield efficiency is I5%-35%, and the increase rate of accumulation is 75.68%-95.77%. The effect of rain collection and soil water storage and soil moisture conservation under different film mulching modes, and the film covering the whole film and semi ridge furrow sowing mode play a great role in collecting rainwater, increasing the ground temperature and keeping soil moisture. The popularization and application of the research results can effectively improve the efficient utilization of precipitation resources in this area. [ABSTRACT FROM AUTHOR]