摘要
Abstract
Vermicompost was an important organic amendment that regulated the functional properties of agricultural systems. However, there was little information on the effect of vermicompost coapplied with inorganic fertilizer on the ecological environment at rhizosphere soil and yield of watermelon. Considering the benefits of vermicompost, a field experiment was conducted to determine whether the vermicompost coapplied with inorganic fertilizer benefits the ecological environment of watermelon rhizosphere soil. There were four treatments in the field experiment, CK (neither urea nor vermicompost was applied), CF (100%of nitrogen was provided by urea), VC (100%of nitrogen was provided by vermicompost), and VC+CF (50%and 50%of nitrogen was provided by vermicompost and urea, respectively). The study was conducted to determine the effects of vermicompost coapplied with inorganic fertilizer on soil phychemical properties, enzyme activities at rhizosphere soil and yield as well as quality of watermelon. The results showed that compared to the CF treatment, the VC+CF treatment significantly decreased the pH value and apparently increased the contents of available N, available P and available K, as well as EC value in rhizosphere soil. At the same time, the activity of urease enzyme, catalase enzyme, polyphenol oxidase enzyme and invertase enzyme in VC+CF treatment was also improved, showing 51.13%, 17.19% and 12.84% increases on urease enzyme activity than in CK, CF and VC treatments, respectively. Additionally, the VC+CF treatment also significantly improved the yield and quality of watermelon. In comparison with the VC+CF treatment, the VC treatment had less effect on soil biological characteristics and yield as well as quality of watermelon. As a result, vermicompost coapplied with inorganic fertilizer had better effect on watermelon, which was an ideal fertilization practices.关键词
西瓜/蚯蚓粪/理化性质/产量/品质Key words
watermelon/vermicompost/physical and chemical properties/yield/quality分类
农业科技
