Effect Of Nitrogen-sulfur Interaction On Physiological Indexes And Yield Of Fragrant Rice In Different Habitats

It is of great significance to study the yield and yield component index,soluble protein content,soluble sugar content and L-proline content of different nitrogen sulfur interaction,different fragrant rice varieties,so as to guide the high yield and high quality production of fragrant rice and provide feasible technical parameters,improve the economic benefits of fragrant rice and maximize the potential of soil production.In this study,xiangwanxian 13and xiangwanxian 17 were used as experimental materials.Nine different nitrogen and Sulfur Interaction treatments were carried out with N₁,N₂,N₃ and S₁,S₂ and S₃,and the experimental design of cracking area was carried out.The results showed that:（1）the content of soluble protein and soluble sugar in rice grains in Jiangmen County,Guangdong Province was significantly higher than that in Chenxi County,Hunan Province;the yield of fragrant rice in Chenxi County was significantly higher than that in Jiangmen County,which was mainly due to the lower daily average temperature,the higher daily temperature range and the significant increase of effective panicles per mu.（2）Treatment of N₁S₃ and N₃S₃could significantly increase the soluble protein content of grains（P<0.01）;treatment of N₂S₁,N₂S₂,N₃S₁ and N₃S₂ could significantly increase the L-proline content of grains（P<0.01）;（3）except for N₃S₂ treatment,the other seven treatments in Guangdong habitat significantly reduced the soluble sugar content of grains（P<0.01）,while each treatment in Hunan habitat could significantly increase the soluble protein content of grains（P<0.01）Soluble sugar content（P<0.01）.（3）There was a significant positive correlation between the content of soluble sugar and the yield,and there was a significant positive correlation between the content of soluble sugar and the yield in N₂S₂,N₂S₃ and N₃S₃ treatments（P<0.01）.The yield of xiangwanxian 13 and xiangwanxian 17 was positively correlated with the content of soluble protein and sugar,and the yield of xiangwanxian 17 was positively correlated with the content of L-proline.（4）N₃S₂ can significantly increase the number of effective panicles per mu and N₃S₁ can significantly improve the seed setting rate of fragrant rice.N₃S₃,N₃S₂,N₃S₁ could significantly increase the yield of xiangwanxian 13 in Chenxi,and N₃S₂,N₃S₂could significantly increase the yield of xiangwanxian 13 in Jiangmen.N₃S₃,N₃S₂ could significantly increase the yield of xiangwanxian 17 in Chenxi,and N₃S₃,N₃S₂,N₃S₁ could significantly increase the yield of xiangwanxian 17 in Jiangmen.Therefore,in Jiangmen County,Guangdong Province,the habitat significantly increased the soluble protein content and sugar content of rice grain;N₁S₃,N₃S₃ could significantly increase the soluble protein content of rice grain（P<0.01）;N₂S₁,N₂S₂,N₃S₁,N₃S₂ could significantly increase the L-proline content of rice grain（P<0.01）;in Chenxi,the nitrogen Sulfur Interaction combinations that could significantly increase the yield of xiangwanxian 13 were N₃S₃,n In Jiangmen,the N₃S₂ and N₂S₂ combinations could significantly increase the yield of xiangwanxian 13.N₃S₃,N₃S₂ could significantly increase the yield of xiangwanxian 17 in Chenxi,and N₃S₃,N₃S₂,N₃S₁ could significantly increase the yield of xiangwanxian 17 in Jiangmen.The yield,number of effective panicles per mu and 1000 grain weight of fragrant rice in N₃S₃ were significantly increased,but the total number of grains per panicle was significantly reduced.The reason is worth further discussion.