Abstract:

Investigated the feasibility of fertilizing decreasing with applying water-solubility amino acid fertilizer on rice by a experiment. It had four treatments: soil testing and formulated fertilization, decreased 10% nitrogen + water-solubility amino acid fertilizer, decreased 15% nitrogen + water-solubility amino acid fertilizer and decreased each 10% of nitrogen, phosphorus and potassium+ water-solubility amino acid fertilizer. In the experiment, influences of each treatment on rice’s economic characters, yield and economic benefit were studied, and the effects on protecting farming ecological environment were also estimated. The results showed that all fertilizing decreasing treatments had decreased rice’s height, tiller number per point and seed setting rate, while improved the filled grain number per panicle. Compared with soil testing and formulated fertilization, decreased 10% nitrogen + water-solubility amino acid fertilizer improved thousand seed weight, while other two treatments decreased it. And decreased 10% nitrogen + water-solubility amino acid fertilizer could increase production 6.73%, saving cost and improving income 19.77%, the yield and income of decreased 10% nitrogen + water-solubility amino acid fertilizer were closed to soil testing and formulated fertilization, but the decreased each 10% of nitrogen, phosphorus and potassium+ water-solubility amino acid fertilizer treatment could decreased the yield and income outstandingly. Therefore, decreased nitrogen fertilizer’s amount based on soil testing and formulated fertilization at 10% or 15%, with applying water-solubility amino acid fertilizer, could achieve the aim of maintaining or improving yield, and it also had a considerable environmental benefit.