In order to elucidate the effects of combined application of organic fertilizer and chemical fertilizer on rice yield and quality during rice growth,a field experiment was conducted in Wuhan,Hubei Province to study the effects of different ratios of organic fertilizer replacing chemical fertilizer on rice yield,quality,and soil nutrient content.The results showed that optimized fertilization(including recommended fer-tilization and substitution of organic fertilizers with different gradients)could promote rice yield by 3.49%-18.43%.Under equal nutrient content conditions,organic fertilizers could replace chemical fertilizers to increase rice yield by 5.63%-14.43%,and organic fertilizers could replace 30% nitrogen fertilizers to achieve good yield levels.Different fertilization had no significant impact on rice quality indicators.Optimi-zing fertilization promoted an increase of 1.03%-6.21%,16.32%-65.87%,and 2.11%-19.92% in the accumulation of nitrogen,phos-phorus,and potassium,respectively.When organic fertilizer replaces 30% nitrogen fertilizer,the accumulation of nitrogen and phosphorus in rice plants was the highest.When organic fertilizer replaces 15% fertilizer nitrogen,the accumulation of potassium in plants was the highest.After optimizing fertilization,the fertilizer application rate decreased by 0.89%-46.66%.Compared with the recommended fertilization treat-ment,the fertilizer application rate using organic fertilizer decreased by 15.37%-46.16%.Taking into account various economic factors,re-placing 30% fertilizer with organic fertilizer has the highest economic benefits,increasing income by 6 140.38 yuan/hm2 compared to farmers'habitual fertilization.
关键词
水稻/有机无机肥配施/产量/品质/土壤养分
Key words
Rice/Combination application of organic and inorganic fertilizer/Yield/Quality/Soil nutrient
维普
万方数据