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一、吐絮期的生育特点。吐絮期的棉花,营养生长已经停止,进入生殖生长期。叶色已由下向上陆续褪黄,根系吸收能力已弱,有效开花期先后结束,这一时期是增加铃重、提高纤维品质的重要时期。此时棉株生理活动减弱,光合作用强度下降,对肥水的要求也减少。管理上,对肥水条件差的棉田,要求保持根系活力,延长叶片功能,防止早衰;对肥水条件好的棉田,防止田间荫蔽和贪青晚熟,是确保高产优质的关键。
First, bolting floc growth characteristics. Cotton boll flowering period, vegetative growth has stopped, into the reproductive growth period. Leaf color has been from the next up gradually yellow, the root absorption capacity has been weak, the effective flowering has ended, this period is to increase boll weight, improve fiber quality is an important period. Cotton plant physiological activity weakened at this time, photosynthesis intensity decreased, the demand for fertilizer is also reduced. Management, the poor water and fertilizer conditions in the cotton fields, requiring the maintenance of root activity, extend the function of leaves to prevent premature aging; good fertilizer and water conditions in cotton fields to prevent field shade and late greyish green is the key to ensure high yield and quality.