盐碱地植棉,拿苗困难,保苗更不容易,特别是小雨死苗,很难控制。几年来,我们在阳谷县鹅鸭坡大队,对盐碱地棉花死苗问题作了一些调查研究,摸索出一些控制措施。一、棉花苗期耐盐性及小雨后死苗原因棉花耐盐力较强,据我们观测,硫酸盐盐土,0—20厘米土层含盐小于0.25％时,能正常出苗,需要有效积温80℃左右;含盐0.25—0.35％时,可出苗60—80％,需耍 Salt and alkali cotton, cotton seedling difficulties, seedlings is more difficult to protect, especially the seedlings die, it is difficult to control. In the past few years, we conducted a series of investigations and studies on the problem of dead seedlings of cotton in saline-alkali soil in the goose-duck slope brigade in Yanggu County, and worked out some control measures. First, the cotton seedling salt tolerance and dead seedlings after the rain reason cotton strong salt tolerance, according to our observation, sulfate saline, 0-20 cm soil salt less than 0.25%, normal emergence, the need for effective accumulation of temperature 80 ℃; salt 0.25-0.35%, the emergence of 60-80%, need to play