Effects on Yield and Quality of Potato and Soil Nutrients:Iron and Zinc Fertilizers
In order to explore the combined application amount of micro-fertilizer for high-quality and high-yield potato in the arid agricultural area of Longzhong,the effects of iron and zinc fertilizer on potato yield,quality and soil nutrient were studied.The two-factor random block design was adopted,with zinc and iron fertilizer as the test factors,and three fertilization levels were set for zinc and iron fertilizer,namely:zinc fertilizer(0,20,40 kg/hm2)and iron fertilizer(0,10,20 kg/hm2),a total of 9 treatments.The results showed that single application of iron and zinc fertilizer and their interaction had significant effects on potato yield,quality and soil available zinc and iron content(P＜0.05).Among them,the yields of Fe2Zn0 and Fe0Zn2 increased by 15.0％and 19.5％compared with Fe0Zn0,and the yield of Fe2Zn2 increased by 21.5％compared with Fe0Zn0.Fe2Zn0 increased the iron content by 12.4％compared with Fe0Zn0,and the zinc and iron content of Fe0Zn2 increased by 10.8％and 9.8％compared with Fe0Zn0.The yield,starch,iron and zinc content of Fe2Zn2 were significantly increased by 21.5％,3.4％,17.3％and 13.6％compared with Fe0Zn0,respectively.In the 0-10 and 10-30 cm soil layers,the available iron content of Fe2Zn0 was significantly increased by 15.0％and 4.0％compared with Fe0Zn0,the available zinc content of Fe2Zn2 was significantly increased by 104.2％and 42.9％compared with Fe0Zn0.Considering comprehensively,under the conditions of this experiment,the single application rates of iron and zinc micro-fertilizer were 20 kg/hm2 and 40 kg/hm2,respectively,and the combined application rate of iron fertilizer was 20 kg/hm2 and zinc fertilizer 40 kg/hm2 had the best effect,which was conducive to improving potato quality and increasing yield.
potatoiron and zinc fertilizeryieldqualitysoil nutrient
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