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微量元素,如铁、锰、硼、铜、锌、钼等在烟草体内含量虽少,却是烟草生长发育所不对缺少的.轻度缺乏微量元素的烟株补施适量的微肥,可增产8.2～28.1%,上等烟率提高5.54～8.43%,亩产值提高16.4～24.8%.如何诊断烟株缺乏微量元素呢?首先看病状的出现部位.如果症状首先出现在老叶上,说明缺乏的是可以再利用的元素,如锌;若症状先在新生组织上出现,说明缺乏的属于不再利用的元素,如铁、锰、铜、钼、硼等.烟株缺锌时,叶片窄小,斑点在主脉两侧先出现,
Trace elements, such as iron, manganese, boron, copper, zinc, molybdenum and other content in the tobacco content is small, but the lack of growth and development of tobacco is missing .Mild trace elements lack of trace elements supplemented with appropriate amount of micro-fertilizer, can increase production 8.2 ~ 28.1%, the finest smoke rate increased 5.54 ~ 8.43%, the mu production value increased by 16.4 ~ 24.8% .How to diagnose the tobacco plants lack of trace elements? First look at the appearance of the symptoms .If the symptoms first appeared in the old leaves, indicating the lack of Are elements that can be reused, such as zinc; if the symptoms first appear on the nascent tissue, the lack of elements that are no longer in use, such as iron, manganese, copper, molybdenum, boron, etc. When tobacco plants are zinc deficient, Small, spots appear on both sides of the main veins,