一、存在的问题1.棉农对施肥投入少,满足不了高密植棉高产对养分的需要。2.春耕期间气温不稳定,导致20%～30%棉田播种偏晚,影响棉花的一播全苗。3.棉花宽膜高密栽培技术是一个新技术,各农机手田间操作宽膜机具的技术水平不够,播种质量存在诸多问题,如播种深度不够、错位多、覆土厚度不均匀。4.棉花主栽品种存在诸多问题,如株型松散果 First, the existing problems 1. Farmers on the fertilization less investment, can not meet the high density of high-yielding cotton nutrient needs. 2. The temperature during the spring is not stable, resulting in 20% ~ 30% sowing cotton late, affecting a broadcast of cotton seedlings. The cotton wide-film high-density cultivation technology is a new technology, the field of agricultural machinery operators wide-film machine technology is not enough, sowing quality, there are many problems, such as planting depth is not enough, dislocation and more uneven soil thickness. 4. There are many problems of cotton cultivars, such as loose-type plants