棉花优质高产栽培中,有一条成功经验就是采用苗床营养钵育苗,在育苗过程中因苗床处在高温高湿变化大,极易诱发病虫和草害,因此,要做好棉花苗床病虫害的主动防治,抓好苗床管理,提高棉苗素质促早发、夺丰收。化学除草。棉花营养钵育苗常会遇到草害问题,管理不善时会使苗床杂草丛生、造成草荒苗,严重抑制棉苗生长发育。因此,在育苗时必须对苗床进行化学除草,有些地方为了赶季节,选用新苗床进行营养钵育苗,没有及时翻耕 One of the successful experiences in cotton high-yielding cultivation is the adoption of seedling nutrition bowl nursery. In the process of nursery seedling, the temperature, humidity and humidity in the nursery bed vary greatly, which can easily induce pests and weeds. Therefore, Prevention and control, do a good job seedbed management, improve the quality of cotton seedlings early hair, harvest harvest. Chemical weeding. Cotton nutrition bowl nursery often encounter grass problems, poor management will make beds overgrown, resulting in grass waste, severely inhibited the growth of cotton seedlings. Therefore, we must nurture seedbed chemical weeding, in some places in order to catch the season, the selection of new seedling nursery bowl cultivation, there is no timely tillage