关键词: 基础产量, 土壤速效养分, 相关分析, 通径分析, 水稻

Abstract:

The correlation and influence of soil available nutrient on base yield were analyzed, using 1748 data of rice “3414” fertilizer test of Hunan province in recent years. The results showed that the soil available nutrients were highly significant positive correlated with the yield of rice in the non fertilization basal yield and no N, P, K basal yield among them, the content of alkali hydrolyzable nitrogen had the greatest correlation with basal yield, followed by available K and available P. The path analysis showed that total fertilization yield had the greatest direct effect on yield. Therefore, the regression mathematical model can be used to estimate the basal yield by its significant correlation, the non fertilization basal yield and no N, P, K basal yield could be obtained, Then, the use efficiency of N, P, K fertilizer, soil effective nutrient correction coefficient and relative yield were calculated. It could calibrate and develop recommendation fertilization scheme, and guide scientific fertilization of rice production.

Key words: basal yield, soil available nutrients, correlation analysis, path analysis, rice