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棉花生产过程中,由于密度、肥力和管理水平的不同,经常出现生长正常(壮苗)生长过旺(胖苗)和生长不足(弱苗)三种长势和介于三者之间的棉苗。它们在整个生育期中,有着各自的光能利用、有机物分配、干物质累积等途径,致使经济系数不同,造成棉花产量的差异。现就1976—1977年在泥城公社人民大队二年的观察测定,阐述三种长势棉苗的特性,以使棉花沿着正确的途径发展,采用相应措施,保蕾保铃,夺取高产。
Cotton production process, due to the density, fertility and management of different levels, often grow well (strong seedlings) over-growth (fat seedlings) and under-growth (weak seedlings) three kinds of growth and between the three cotton seedlings . Throughout their growth period, they have their own ways to use light energy, organic matter distribution, dry matter accumulation, resulting in different economic coefficients, resulting in differences in cotton production. Now on the observation and measurement of the two years of the National People’s Brigade in the mud city commune from 1976 to 1977, we elaborate on the characteristics of three kinds of growing cotton seedlings in order to make cotton develop in the right way and adopt appropriate measures to protect the bolls and seize high yields.