棉花苗床化学除草,多年来采用土壤封闭型除草剂——除草醚进行防除,效果一般为80%左右,但操作技术要求高,棉苗易产生药害,使用不够安全。1985年,我们用茎叶处理型除草剂——稳杀得防除苗床3～5叶龄期禾本科杂草,不但防效好,而且对棉苗极为安全,不产生药害,经济效益好。 Cotton seedbed chemical weeding, soil closed herbicide - weed control for many years, the effect is generally about 80%, but the operation of technical requirements, cotton seedling easy to produce injury, the use of safe enough. In 1985, we used stem and leaf-treated herbicide - stablized and controlled to prevent 3 to 5 leaf stage gramineous weeds in the seedbed. It not only had good control effect, but also was extremely safe for cotton seedlings without phytotoxicity and had good economic benefits.