The Regression Analysis Between the Yield and Main Agronomic Characters of the Sand Rice

Using the common varieties in Tongliao sand rice production,the yield and the main agronomic characters are disposed by correlation analysis and multiple regression analysis.The results show that is significant positive correlation between single cavity production of rice and setting percentage,thousand-grain weight,is significant negative correlation with empty grain number,is not significant negative correlation with other characters.Through the stepwise to establish the mathematical model,path analysis results show that ear length,grain number and thousand-grain weight have positive effect on the production,but growth period,plant height and tiller number have negative effect on the single cavity production of rice.In the sand lining membrane conditions,choosing variety of moderate ear length and growth period,high thousand-grain weight,less tiller number,many grain numbers,moderate plant height,to acquire high yield.