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二、苗期管理长绒棉从出苗到现蕾约需60天左右。在苗期生长发育过程中,要求达到壮苗早发,为延长有效开花结铃期和早熟、高产、优质打下基础。五、六月间,郊区正值低温多雨的梅雨季节,气温回升慢,棉苗生长发育不快,株高日生长量0.11～0.37公分,为株高生长高峰期的十分之一左右,叶片数增长也较慢。此时管理不当,常会造成弱苗或旺苗,影响壮苗早发。因此要采取“早”字当头,前促后控的管理措施: 1.多松土,轻施苗肥:以松土为主,轻施、早施苗肥,这是争取壮苗早发不疯长的关键
Second, seedling management Long-staple cotton seedlings from the bud to about 60 days. In the seedling growth and development process, to achieve strong seedlings early hair, in order to extend the effective flowering and bolting stage and early maturity, high yield, high quality lay the foundation. In May and June, the suburb was in the rainy and rainy rainy seasons. The temperature rose slowly and the growth of cotton seedlings was unpleasant. The daily growth of plant height was 0.11 ~ 0.37 cm, which was about one tenth of the peak height of plant height. The number of leaves Growth is slower. Improper management at this time, often resulting in weak seedlings or seedlings, affecting strong seedlings early hair. Therefore, we must take the “early” word, the former pro-post control measures: 1. More loose soil, light Shi Miao: Loosen soil-based, light Shi, early Miao Shi, which is for strong seedlings early hair is not The key to soaring