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我区七十年代棉花生产总的是个发展的趋势,但产量高低之间经常波动很大,十年中有四年(1973、1974、1976、1979)增产,六年减产,增产幅度为23.59—46.19％,减产幅度为3.27—21.66％。为什么会产生不稳定的局面?原因是多方面的,有政策上的原因,有气候关系,也有我们工作上的问题。单就其棉花产量与棉株生长发育来分析,壮苗早发是起主导作用的,是影响整个棉花生育进程的限制因素,它将决定棉花铃重,最终对产量的形成起重大作用。而棉花壮苗早发是受品种、气候和栽培条件制约
The total cotton production in the 1970s is a development trend. However, the output fluctuates frequently. Four years (1973, 1974, 1976 and 1976) have been increased in this decade, and the output has been reduced in six years. The increase rate is 23.59- 46.19%, the reduction rate of 3.27-21.66%. Why there is instability? There are many reasons for this. There are policy reasons, climate relations and problems in our work. The analysis of cotton yield and cotton plant growth shows that strong seedling early onset plays a leading role and is the limiting factor affecting the entire cotton growth process. It will determine the boll weight of cotton and ultimately play a significant role in the yield formation. The strong early seedling cotton is subject to varieties, climate and cultivation conditions