不同施肥模式对双季稻产量及土壤肥力的影响

Effects of different fertilization patterns on yield and soil fertility of double cropping rice

为了探究不同施肥方式对土壤肥力及双季稻产量的影响。该研究以浙南双季稻为研究对象,于2021年在瑞安市布置5个田间小区试验,比较不施肥(T1)、常规施肥(T2)、测土配方施肥(T3)和测土配方施肥+有机肥(T4)在土壤肥力和早晚稻产量等方面的差异。多点试验表明,不同处理之间的土壤肥力存在差异,不同试验点的有机质含量差异较大,以5个试验点的平均值来看,处理T3的全氮和碱解氮含量最高,处理T1最低;处理T3的有效磷含量最高,处理T1最低;处理T2和T3的速效钾含量较为适宜,而处理T1的速效钾含量不足;处理T2的缓效钾含量最高。在不同施用方式下,施用肥料提高了水稻年产量,处理T2能够提高水稻产量,其他处理(如T1和T3)也可能对产量有一定的促进作用,但处理T2的效果最好,可以作为一种优化水稻生产的方法。

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.