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人参缺锌后,叶片严重失绿,光合速率下降,干物质积累减少,植株弱小,产量可降低40％以上,优质率降低17％以上。人参缺锌的主要原因是土壤有效锌供应不足。叶面喷施0.2％和0.5％的硫酸锌可有效防治人参缺锌症,喷施时期以展叶后至绿果期为宜。
Ginseng zinc deficiency, the leaves of a serious loss of green, photosynthetic decline, reduced dry matter accumulation, plant weak, yield can be reduced by 40%, higher than the quality rate of 17% or more. The main reason for zinc deficiency in ginseng is insufficient supply of soil available zinc. Foliar application of 0.2% and 0.5% zinc sulfate can effectively prevent and treat zinc deficiency symptoms of ginseng, spraying period to green leaves after the expiry date is appropriate.