1　水稻大垄覆膜钵苗宽窄行栽培增产原因1. 1　蓄热增温改善了泥层的积温条件覆膜后白天日光照射泥层热量增加快 ,由于薄膜不透气 ,泥面空气不流动 ,热量不会散失 ;夜间薄膜能减缓泥层温度下降速度 ,膜内水蒸气凝结也会放出一部分热量 ,使泥层表面温度能较长时间稳定 ,具有“温 1 large paddy rice seedlings width and width row cultivation reasons 1. 1 thermal storage warming to improve the temperature conditions of the mud layer after the film daylight exposure to the mud layer heat increases rapidly, due to the membrane impermeable, mud surface air does not flow, The heat will not be lost; night film can slow the rate of decline in the mud layer, the film will condense the water vapor will release part of the heat, the mud surface temperature can be a long time stable, with "warm