ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

In order to solve the environmental pollution caused by field plastic film residue and explore the effects of different cropping patterns under liquid film mulching on soil moisture and maize growth, the experiment with four planting patterns treatments, including flat planting without mulching (CK), flat planting with liquid film mulching (YM1), ridgefurrow planting with liquid film mulching over ridge only (YM2) and ridge-furrow planting with liquid film mulching over ridges (YM3), were carried out in 2013 and 2014. The results showed that the change of soil moisture under different treatments was basically the same, which presented waving trend as rose firstly and then reduced with the increment of days after sowing. The soil water storages under YM1, YM2, YM3 treatments were significantly increased by 1.23%, 4.29%, 4.79%, respectively, compared with that under CK when the former period precipitation reached 16.1mm, but there was no significant difference among four treatments in soil water storage after rainfall during latter period. The average water storages under YM1, YM2, YM3 treatments were increased by 2.74%, 2.87%, 9.79% and the water consumptions were decreased by 1.26%, 2.03%, 8.17%, respectively, compared with those under CK, with significant difference only existed between YM3 and CK. Compared with CK, the yields of all mulching treatments were 1.88%, 11.32%, 21.96% higher, the average water use efficiencies were improved by 3.17%, 13.51% and 32.67%, respectively, and the yield increment and water use efficiency enhancement effects of YM2 and YM3 were significantly higher than those of CK. In conclusion, YM3 treatment was the best among all treatments in yield increase and water saving, and it could provide theoretical basis for the utilization of liquid film.