Effects Of Organic And Inorganic Fertilizers On Rice Yield, Quality And Soil Fertilit

The decline of paddy soil fertility is an obstacle factor restricting the sustainable development of rice production.Scholars at home and abroad have carried out a lot of research on improving the soil quality of paddy fields and ensuring the continuous high yield of rice.main measure of the problem.Therefore,this paper analyzes and studies the combination of conventional nitrogen application(120 kg/hm~2)and nitrogen reduction(108 kg/hm~2)with equal nitrogen biological fertilizers,organic fertilizers and carbon-based fertilizers to explore the effect of organic and inorganic fertilizers on rice yield.and soil fertility,the conclusions are as follows:1.The combined application of organic and inorganic fertilizers can improve the growth traits of Longjing 31.Among them,the plant height and the number of stems and tillers of nitrogen reduction combined with carbon-based fertilizer are the largest.Compared with the control CK in 2020-2021,there is a certain improvement,and the percentages of improvement are respectively were 5.92%and 1.97%.2.Organic and inorganic fertilizers can improve the dry matter accumulation of Longjing 31.The dry matter accumulation of leaves,stems and ears is the highest under the conditions of nitrogen reduction and carbon-based fertilizer treatment,and the dry matter of leaves at full heading stage from 2020 to 2021 is the highest.The accumulative amounts were 1918.92 kg/hm~2and 1942.07 kg/hm~2,respectively,the dry matter accumulative amounts at the full heading stage of the stem were 5210.13 kg/hm~2and 5384.26 kg/hm~2,respectively,and the dry matter accumulation at the mature ear stage was 13206.77 kg/hm~2,respectively.and 13978.25 kg/hm~2,compared with the control CK in 2020-2021,there is a certain increase,the percentage of increase is 6.14%and 3.43%respectively.3.Organic and inorganic fertilizers can promote the absorption of nitrogen,phosphorus and potassium in Longjing 31.Among them,the nutrient absorption of plants under the conditions of nitrogen reduction and carbon-based fertilizer treatment is the highest.Compared with the control CK in 2020-2021,the plant has a certain improvement.Compared with the control,the accumulation of phosphorus was increased by 14.86%and 17.36%,the accumulation of phosphorus was increased by 9.91%and 17.91%,and the accumulation of potassium was increased by 9.49%compared with the control.4.Organic and inorganic fertilizers can promote the yield of Longjing 31.Among them,the actual yield is the highest under the conditions of nitrogen reduction and carbon-based fertilizer treatment.From 2020 to 2021,compared with the control CK,the increase percentages are7.69%and 13.73%respectively.5.The reduction of organic and inorganic fertilizers has improved the brown rice rate,milled rice rate,whole milled rice rate,and taste quality of Longjing 31,and the chalky grain rate has decreased.6.Organic and inorganic fertilizers can promote the improvement of soil nutrients.Among them,the nitrogen reduction combined with carbon-based fertilizer treatment has the highest soil nutrient content.From 2020 to 2021,compared with the control CK,the organic matter increased by 1.93%and 11.79%,respectively.Alkali-hydrolyzed nitrogen increased by 26.03%and27.83%respectively;available phosphorus increased by 17.60%and 24.47%respectively compared with the control CK,and available potassium increased by 8.47%and 11.78%respectively;application of biochar-based fertilizer can increase soil porosity and reduce soil bulk density.trend,which is conducive to the maintenance of soil water holding capacity.7.Organic and inorganic fertilizers can promote the increase in the enzymatic activities of enzymes related to carbon metabolism and nitrogen metabolism in soil.To sum up,the reduction of nitrogen fertilizer application and the combined application of carbon-based fertilizer are suitable formulas for promotion in production,which are beneficial to fertilize soil and increase rice yield.