Effects of different fertilization patterns on yield and soil fertility of double cropping rice
In order to explore the effects of different fertilization methods on soil fertility and double cropping rice yield,in this study,five field trials were conducted in Ruian City in 2021 to compare the differences between no fertilization(T1),conventional fertilization(T2),soil testing formula fertilization(T3),and soil testing formula fertilization+organic fertilizer(T4)in soil fertility and early and late rice yield.Based on the average value of the five test sites,the total nitrogen and alkali hydrolyzable nitrogen content of T3 treatment was the highest,the available phosphorus content of T3 was the highest,and the available potassium content of T1 was the lowest,the available potassium content of T2 and T3 was more appropriate,while the available potassium content of T1 was insufficient,and the slow-release potassium content of T2 treatment was the highest.Under different application methods,the application of fertilizer increased the annual yield of rice,and the treatment of T2 could increase the yield of rice,and other treatments(such as T1 and T3)may also have a certain effect on the yield,but the treatment of T2 had the best effect and could be used as a method to optimize rice production.
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