Influence Of Applied Ni On Soybean At Different Growth Stage Of Copper Zinc Iron Magnesium Content

At present, the content of nickel has increased in soil year by year, appearing differentdegrees of nickel contamination. While nickel is necessary nutrients for plant growth, therefore,studying nickel stress on plant growth has important significance. Nickel is one of the necessarymicronutrients for the growth and development of soybean, it was important physiological andbiochemical process of soybean growth and development. It plays an important role for soybeangrowth and development to study the effect of nickel for the growth of soybean. Nickel not onlyis the essential to soybean growth but also its content has a great influence on the absorb andrevolve other nutrients of soybean in vivo. In order to provide a good nutritional environmentfor soybean to make sure normal growth, should pay attention to the nutrition balance andinteraction.This paper investigated the effect of different concentration nickel stress on soybeandifferent growth stage of copper zinc iron magnesium content and this pot experiment approachto soybeans as materials, the results indicated as follows:(1) The effect of applied nickel in soil on nickel copper content of different growth stagesoybean.Nickel content of various parts of different growth stage soybean was increased withapplied nickel increasing in soil, nickel content of various parts soybean maximum whenapplied nickel was320mg/kg. Copper content of the various parts of different growth stagesoybean plant decreased with applied nickel increasing. This may be due to the absorption ofnickel and copper in competition, such that the copper content in plants with higher nickelcontent is gradually reduced.(2)The effect of applied nickel in soil on zinc iron magnesium content of different growth stagesoybean.Zinc iron magnesium content of root stem leaves pod of different growth stage soybeanincreased initially and then decreased with applied nickel increasing. Zinc content of variousparts was increased when application of nickel in less than80mg/kg, when nickel applied morethan80mg/kg, zinc content of various parts soybean decreased with the nickel appliedincreasing, zinc content of various parts soybean minimum when applied nickel was320mg/kg,zinc content in the pod of different nickel applied levels were higher than other parts in maturesoybean. Magnesium content of roots and leaves of soybean maximum with applied nickel was40mg/kg, magnesium content of stems and pods of soybean maximum with applied nickel was 80mg/kg. Magnesium content of various parts of soybean decreased in each period with nickelcontent increased in soil, various parts of seedling soybean of magnesium content is leaf> root>stem, in the mature soybean the magnesium content of pod higher than other parts. Ironcontent of stems of soybean maximum with applied nickel was40mg/kg, iron content of rootsleaves pod of soybean maximum with applied nickel was80mg/kg, iron content in root withdifferent nickel applied are higher than other parts in seedling soybean, and in mature soybeanthe highest iron content of various parts is leaf.