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1.棉花壮苗早发是高产优质的基础。苗床早苗壮苗的指标是:真叶2~3片,苗高12至15厘
1. Cotton seedlings early hair is the basis of high yield and quality. Seedling seedling strong seedlings early indicators are: true leaves 2 to 3, 12 to 15% seedling height