锌肥喷施对棉株体内锌素分配动态变化的影响

[目的]探索棉花生长中对锌素吸收和积累的规律及不同浓度锌肥喷施对棉株体内锌素分配动态变化的影响.[方法]田间小区试验.[结果]苗期是棉花对锌素变化最敏感的时期；而蕾期和铃期是锌素吸收量最大的时期；花期生长最旺盛,吸收和消耗量均很大；虽然随着施锌水平的提高,各器官中锌含量都是逐渐升高的,但是总体来讲,苗期含量是最高的,蕾期和铃期差不多,其次是花期,吐絮期含量最低.[结论]根据不同棉花锌素吸收规律和不同生育时期对锌的消耗和积累规律来合理的补施锌肥,对棉花生产有重要意义.

The Effect of Zinc Spraying on Zinc Distribution at Different Cotton Growth Stages

【Objective】 In order to explore the effects of zinc spraying on cotton in vivo distribution of dynamic changes and absorption and accumulation of zinc.【Method】The field experiment was carried out.【Result】 The result shows that cotton seedling stage is most sensitive to changes in zinc,and the bud and boll stage is the largest zinc absorption period.The most vigorous growth period is flowering stage,during which,zinc absorption and consumption are large.Although zinc content of all the organs io gradually increasing with zinc level raising,seedling stage is the highest level;bud stage is almost equal to bell stage.Then it is followed by the flower stage.During the boll opening period,zinc content reached the lowest level.【Conclusion】 Therefore,we should apply zinc legitimately according to the laws of different cotton zinc absorption,consumption and accumulation regulations,which is of crucial importance to cotton production.