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由于根衰及栽培措施不当、病虫危害等原因, 造成棉花早衰,严重影响产量。应对症采取有效措施,延长根系和叶片的功能期,防止早衰。1 早衰的外部表现早衰是地膜棉生产中长期存在的问题,在目前超宽膜和宽膜植棉模式上表现尤其突出。其外部表现为:植株矮小,棉株提前衰老、枯萎,蕾铃脱落严重,僵瓣、干铃增加,果枝果节少,封顶早,生长无后劲,上部空果枝多,吐絮提前。经过调查,早衰棉田的果枝比正常棉田少40%左右, 总铃数比正常棉田少30%以上,产量降低。
Due to root failure and improper cultivation measures, pests and diseases and other reasons, causing premature aging of cotton, seriously affecting the yield. Response to take effective measures to extend the functional roots and leaves to prevent premature aging. 1 Premature Senility External Premature aging is a long-standing problem in the production of mulched cotton, especially in the current ultra-wide and wide-mulched cotton. The external appearance is as follows: the plants are short and the cotton plants prematurely age and withered; the buds of the cotton bolls fall off seriously; the dead petals and the dry bell are increased; the fruiting branches are few; the cap is early and there is no stamina; After investigation, premature failure of cotton fields than normal cotton fields less about 40% of the total number of bolls less than normal cotton fields less than 30%, lower yields.