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人参施底肥和根部追肥易被土壤固定或流失,而叶面喷施肥料吸收良好,且不易浪费,方法简而易行.1986年我们采取完全营养液和微量元素,使用不同浓度进行了根外追肥试验.微量元素的小区初步试验证明,硼肥增产幅度最大达58.73%,平均增产28.09%,锌肥平均增产32.86%,整个小区试验平均增产32.30%.1987年又在三个林场参地进行了中级试验,平均增产25～27%.两级试验均证明,人参微量元素增产效果极为显著,值得大力推广.完全营养液根外施肥结果,初级试验小区增产21.59%,由于大面积推广参农不易接受,未做中级试验. 目前,人参栽培多采用阔叶混交林的土壤,这种土壤腐殖质层厚,有机质含量高,且土壤理化性质好.但是,这类森林土壤,由于多年的淋溶过程,使某些生长必需元素减少,成为限制生长的主要因素.为了寻找投资少、见效快、收益较大的根外施肥方法,我们在辉南县森林经营局四岔林场的参地,进行了不同微量元素不同浓度的试验和完全营养液不同浓度的试验.
Ginseng base fertilizer and root top dressing easily fixed or lost soil, and fertilizer foliar spray good absorption, and easy to waste, the method is simple and easy.In 1986, we take complete nutrient solution and trace elements, using different concentrations of the root Topdressing experiments showed that the maximum yield of boron fertilizer reached 58.73%, with an average yield of 28.09%, an average yield of 32.86% of zinc fertilizer and an average yield of 32.3% of the whole plot test. In 1987, Intermediate test, an average yield of 25 to 27% .Two levels of tests have proved that the ginseng trace elements yield effect is extremely significant, it is worth to vigorously promote the complete nutrition solution root fertilization results, the initial trial plot yield 21.59%, due to large-scale promotion of agriculture Not easy to accept, did not do the intermediate test.At present, ginseng cultivation and more use of broad-leaved mixed forest soil, the soil humus layer thickness, high organic matter content, and soil physical and chemical properties.However, such forest soil, due to years of leaching Process, so that some of the necessary elements of growth to reduce, become the main factor limiting growth.In order to find less investment, quick, more profitable methods of external fertilization, we Huinan County, Forest Farm Management Bureau quadrivial ginseng, conducted tests and experiments with different concentrations of nutrient solution with different concentrations of different trace elements.