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不同喷施浓度及喷施次数对蕹菜产量及茎叶锌含量的影响结果表明 :喷施 0 0 5%及0 1 %的硫酸锌液均能提高蕹菜的产量 ,但以 0 0 5%的处理对产量的提高作用最明显 ,浓度超过0 1 %时 ,对蕹菜生长有抑制作用 ;提高喷锌浓度 ,蕹菜锌含量的增加为叶片大于茎 ;喷施 1～ 2次 ,有明显的增产效果 ,喷施超过 2次反而减产 ;随着喷施次数的增加 ,蕹菜锌含量也增加
The results showed that the spraying of 0 0 5% and 0 1% zinc sulfate solution can increase the yield of Brasenia schreberi, but with 0 0 5% Treatment had the most obvious effect on the yield increase. When the concentration exceeded 0 1%, it inhibited the growth of B. japonica. When Zn concentration was increased, the leaf Zn content was larger than that of the stem; Of the yield effect, spraying more than 2 times but cut; with spraying times increased, the zinc content of Brasenia schreberi also increased