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针对玉溪市江川县普通红皮洋葱生产上发生的发杈分球现象,以根际土壤及植株各部位器官为研究对象,采用对比法探讨了洋葱分球植株与正常株及其相应的根际土壤的相关营养元素含量状况。结果表明:洋葱发生发杈分球后,不但外部表现出发杈、分球等典型特征,而且内部相关营养元素也发生了明显的变化。洋葱分球株各部位的P元素的含量均明显高于正常株,而N、K元素的含量分球株均低于正常株,从而导致P/N、P/K值过高,N、P、K的比例不协调,同时Ca、Mg、Zn元素吸收量过高(主要富集于洋葱鳞茎和根中),而Mn元素含量太低也是导致洋葱分球发生的一个重要原因。
Aiming at the problem of dividing the ball in common red onion production in Jiangchuan County of Yuxi City, taking rhizosphere soil and organs of various plants as the research object, comparative study was conducted on the relationship between onion sub-plantation and normal plants and their corresponding rhizosphere Soil nutrient status of the relevant content. The results showed that after the seeds were split on the onion, not only the typical characteristics of the onion and the ball were shown on the outside, but also the internal nutrient elements also changed obviously. On the other hand, the content of P in all parts of Onion was significantly higher than that in normal plants, while the content of N and K in each ball was lower than that in normal plants, resulting in the high P / N and P / K, N and P , K is uncoordinated, while Ca, Mg, Zn absorption is too high (mainly concentrated in onion bulbs and roots), while the content of Mn is also an important reason leading to onion balling.