沿海棉区麦套地膜棉存在着出苗容易保苗难,发苗容易稳长难,结桃容易防早衰烂桃难等情况。因此,争全苗、促早发、保稳长、防早衰是夺取地膜棉优质高产的关键。从战略上看,扩大小行宽度,增加地膜覆盖度,提高保苗密度,掌握施肥适度,降低植株高度,确保水系深度是主宰全局的六项措施。具体地说,地膜棉的保苗密度不低于每亩4000株,施肥量不高于每亩20斤纯氮,植株高度不超过90厘米,地膜覆盖度在50％以上,小行宽度不小于1.4尺,水系深度腰墒2尺,间隔30公尺,顺墒1尺,围沟3尺,出 Coastal cotton area cotton cover film cotton seedling there is easy to seedlings difficult, the hair is easy to grow long, peach easy to prevent premature aging decoction and so on. Therefore, the fight whole plant, promote early hair, keep long stability, anti-premature senility is to seize the key to high-quality plastic film mulberry. From a strategic point of view, expanding the width of small firms, increasing the coverage of plastic mulching, raising the seedling density, grasping fertility moderation, reducing the plant height and ensuring that the depth of the water system is the six dominant measures. Specifically, the seedling density of mulched cotton is no less than 4,000 per acre, and the amount of fertilizer is not higher than 20 pounds of pure nitrogen per acre. The plant height does not exceed 90 cm, the mulching coverage is above 50% and the width of the small row is not less than 1.4 Ruler, water deep waist moisture 2 feet, an interval of 30 meters, Shun moisture 1 foot, the ditch 3 feet out