用超薄膜覆盖柑桔嫁接苗圃,能透光、保温、保湿,并能改善作物生态环境,促进嫁接后的植株生长,还可减少苗期的病虫为害,成本低,收效大。柑桔的嫁接期一般都在小寒至大寒之间进行,这时温度低、湿度小,不利于柑桔的生长。采用地膜覆盖,土温比膜外一般提高4℃左右,土壤含水量提高20％左右,有效地提高发芽率;同时,还可减少苗期的炭疽病发生和潜叶蛾为害。 Covering citrus grafting nurseries with ultra-thin film can improve the crop ecological environment, promote plant growth after grafting, reduce pest and disease damage at the seedling stage, and has the advantages of low cost and large effect. Grafting of citrus are generally carried out between the Osamu Osamu, when the temperature is low, the humidity is small, is not conducive to the growth of citrus. With mulching, the soil temperature is about 4 ℃ higher than that outside the membrane, and the soil water content is increased by about 20%, which can effectively increase the germination rate. At the same time, it can also reduce the incidence of anthracnose and the damage of the leaf moth.