Study On Nutrient Dynamics In The Process Of Water-logging Of Vegetable Waste Compost And Its Fertilizer Effect

Vegetable waste is leading the environmental pollution and resource waste problem, so we chose the vegetable waste as raw materials and studied the variation law of the fertilizer nutrients, pH, EC and other changes in the retting process, and then we use a pot experiment to study the yield, nitrate content and nitrogen effects of the vegetable waste compost on rape.Test of vegetable waste compost chose Chinese cabbage and tomato plants as raw materials.According to different materials and methods, a total of 11 treatment was carried. 14 treatments for the pot experiment were carried out: without fertilizer (CK) and different fertilizers and nitrogen gradient treatments. Vegetable waste compost test results show that the phosphorus, potassium and other nutrients of leaf waste compared to fruit and vegetable seedlings transferred to the fertilizer solution more; shredding of waste Chinese cabbage could influent more than tomatoes seedlings waste; inoculated compost slurry and cellulose bacteria had no significant effects; aerated compost could make nitrogen, phosphorus,EC and other nutrients reduce,. pH and GI rise.The pot experiment research results showed that: with the increase of N application, the yields of treatments which applied vegetable waste water-loggedcompost at first increased, then decreased and the yields reached the highest in N application for 0.859 g per pot; The nitrate content of the treatments which used vegetable waste water-logged compost were below safe concentration, but that of fertilizer treatments rose gradually and over security concentration with the increase of nitrogen; The nitrogen utilization rate of vegetable waste water-logged compost were higher than those of fertilizer at the same low amount of N application, howerer, the opposite effect would draw when the author put in quantity and high nitrogen; Application of vegetable waste water-logged compost didn't cause NO3--N obviously changed in the soil,but application of chemical Fertilizer could cause NO3--N obviously changed in the soil. Key words: Vegetable waste; water-loggedcompost; Rapeseed; Yield; Quality; Nitrogen utilization...