The Influence On Vegetable Nutrient Utilization And Activities Of Vegetable Soil And Soil Fertility With Combined Application Of Zinc And Molybdenum And Boron

Trace elements fertilizer and improving soil biological properties can improve the nutrientuse efficiency,soil fertility and crop yields and the quality of agricultural products. It has very important significance to reduce fertilizer pollution and to promote the sustainable development of Agriculture. The paper is based on the long-term experimental field of trace elements which was buildt in2008.And it research for the influence on vegetable nutrient utilization and activities of vegetable soil and soil fertility in the fifth year on the base of five consecutive years of combined application of zinc and molybdenum and boron, and discuss the influence on vegetable nutrient utilization and soil fertility evolution with combined application of zinc and molybdenum and boron. The main results are as follows.1. The vegetable yields of single application of molybdenum fertilizer, boron and molybdenum fertilizer and boron, zinc and molybdenum fertilizer is generally larger than that of the other treatments. Application of trace element such as boron, zinc, molybdenum has stimulation effect.Molybdenum fertilizer could improve vegetable yields obviously.2.Application of boron and zinc molybdenum could significantly promote the absorption of nitrogen and phosphorus of radish, amaranth and eggplant, promote the absorption of potassium in a certain extent.The promotion of application of boron and zinc and molybdenum is best.3.Fertilization could improve the phosphatase, urease activity in soil. On the contrary, invertase, catalase activity in soil gradually reduce. Soil boron and molybdenum have interaction effects on the phosphatase activity. Boron and zinc can improve the phosphatase activity. There is interaction between soil boron and zinc on the activities of soil enzyme. Zinc fertilizer could increase urease activity.4.Fertilization can increase soil available nitrogen, available phosphorus, available potassium, organic matter content, and showed a trend of increase,decrease soil pH. Zinc and molybdenum can promote the activation of phosphorus, and there exists interaction, Promoting the transformation of available phosphorus in soil.Boron,zinc and molybdenum can increase the content of available potassium in soil. Trace elements have no significant influence on soil pH and organic matter content. 5.Soil urease were positively correlated with soil fertility index. Soil invertase and soil fertility index showed significant negative correlation. Soil catalase and alkaline hydrolysis nitrogen, available potassium was significantly negative correlation, and available phosphorus, organic matter was extremely significant negative correlation. The increasment of urease activity could promote the content of total nitrogen in soil. The increasment of urease and phosphatase activity could promote the content of total phosphorus, soil alkali nitrogen, available phosphorus.