近年来,江苏省射阳县连续多年大面积推行西瓜行间覆草,取得了显著成效。据试验,麦收后在西瓜行间结合松土除草,铺盖一层麦秸草(若是麦套西瓜,麦收后麦茬无须急着耕翻,可待以后进行浅锄灭茬,这有助于雨季田间操作和助蔓牵须),能提高西瓜产量一至二成,不仅当季增产,且持续增产。其增产原因:一是覆草可保持土壤疏松,减少水分蒸发和杂草萌发;二是能助蔓牵须,在低产土壤及盐碱薄地覆草还可抑制返盐,增温保墒;三是雨季可免受泥水冲溅,抑制病菌传播,减少落花和烂瓜,有利于提高坐果 In recent years, Sheyang County, Jiangsu Province, for many years the implementation of large areas of watermelon row grass, achieved remarkable results. According to the experiment, after the wheat is harvested, watermelon is combined with loosening and weeding on the lines of watermelon and covered with a layer of straw grass (if the wheat is watermelon and wheat is harvested, it is not necessary to tillage the wheat stubble. Help Manran to be), can increase the yield of watermelon from one to two, not only increase the season, and continue to increase production. The reasons for the increase: First, mulch can keep the soil loose, reduce the evaporation of water and weeds germination; the second is to help pull the tendril, in low yield soils and saline-alkali grass can also inhibit the return of salt, warming soil moisture; Third Rainy season can be protected from mud splash, inhibit the spread of germs, reduce falling and rotten melon, is conducive to improving fruit set