Comparative Research on Defolianting Effects of Early Maturing Upland Cotton Jinken 1402
[Objective] To provide theoretical basis for selecting early-maturing machine-picked cotton varieties with excellent defoliation effect. [ Method] We analyzed the defoliation rule and ripening effect of different types of leaves of Jinken 1402. The important influencing fac-tors affecting the leaf shedding rate of individual plants of variety were found out under the action of defoliating agent. [ Result] Jinken 1402 was higher than Xinluzao 61 in the quantity of main stem leaves,fruit branch leaves and leaf branch leaves, but the abscission rates were higher than Xinluzao 61, and the defoliation effect was better than Xinluzao 61 at 21 d after treatment. The number of boll per plant of Jinken 1402 was higher than Xinluzao 61, and the rate of boll opening number was higher than Xinluzao 61. The fiber quality index reached more than'Shuang 31' , and better than Xinluzao 61. [ Conclusion] The growth period of Jinken 1402 was about 119 d, and the defolianting effect was good at 21 d after spraying defoliator, indicating that this variety was sensitive to defoliation agents. After application, the boll opening rate of cotton were better and excellent fiber quality.
Jinken 1402VarietyDefoliation rateRate of shed leavesBoll opening rate of cottonFiber quality
万方数据
维普
