农业绿色发展背景下的水稻化肥减量化研究OA

At present,there is still a problem of excessive application of chemical fertilizers in rice planting in China.Based on the recommended data of large-scale formula fertilizer application in China's rice region,this study calculated the potential of fertilizer reduction in rice planting in China,and analyzed the fertilizer application of rice in China from four dimensions:planting area,fertilizer application intensity,fertilizer application amount per ton of grain and total fertilizer application amount.On this basis,the key areas in urgent need of fertilizer reduction in rice in China were accurately identified through cluster analysis,and then the fertilizer reduction path of rice was proposed.The results show that the reduction potential of rice fertilizer in China is 2.29 million tons;the provinces in urgent need of fertilizer reduction are Jiangsu,Anhui,Heilongjiang,Jiangxi,Guangdong and Guangxi.Based on this,it is proposed that China should further increase the popularization and application of water and fertilizer integration technology in rice planting,improve the large-scale and specialized planting level of rice,reduce the farming intensity of crops,and stabilize the market price of rice.