氮、氯、硼对烟叶断叶的影响

Effects of Nitrogen,Chlorine and Boron on Broken Leaf of Tobacco

[目的]为了寻求适宜的氮肥、氯肥、硼肥施用量。[方法]以烟草云烟87品种为供试材料,采用田间试验和生物统计学上的单因素随机区组设计,分别研究了氮元素、氯元素、硼元素对烟叶断叶的影响。[结果]断叶发生情况与施氮量、施氯量存在一定的正相关;施用不同含量的硼肥对于断叶率及其平均每株发生断叶片数是没有显著影响的。在一定范围内,株高、茎围等农艺性状与施氮量及施氯量存在一定的正相关,与施硼量无一定规律。合理的施氮量、施氯量、施硼量有利于烤烟产质量的提高。氮元素处理B各等级的外观质量均优于处理A,而处理A各等级的外观质量均优于处理C;氯元素、硼元素各处理不同等级外观质量各有优劣性,无一定规律。[结论]该研究可以为指导平衡施肥及有效减少烟叶自然断叶提供科学依据。

[Objective] The research aimed to seek the optimum amounts of nitrogen,chlorine and boron fertilizer.[Method] Taking Yunyan87tobacco variety as material,field trials and single factor randomized block design were carried out to study the effects of nitrogen,chlorine,boron element on the broken leaf of tobacco.[Result] There was positive correlation between occurrence of broken leaf and chlorine and nitrogen application amount.Application of different levels of boron wasn＇ t significantly affected rates of broken leaf and average number of leaves per plant.Within a certain range,there was some positive correlation between plant height,stem circumference and other agronomic traits and nitrogen and chlorine application amount,but no fixed rule with the amount of boron.Reasonable amount of nitrogen,chlorine and boron could help improve the quality of flue-cured tobacco production.Nitrogen appearance quality of each grade of treatment B was better than that of treatment A,and the appearance quality of treatment A were better than treatment C.Chlorine treatment and boron treatment had advantages and disadvantages of different levels on visual quality,and there were no fixed rules.[Conclusion] The research could provide a scientific basis for the guidance of balanced fertilization and effective reducing of natural broken leaf of tobacco.