九嶷山乡水稻“3414”肥效试验

“3414”Fertilizer Efficiency Test of Rice in Jiuyishan Country

[目的]为降低湖南省宁远县九嶷山乡水稻施肥成本及促进农民增产增收提供借鉴。[方法]以T优227为供试品种,在九嶷山乡上洞村实施"3414"田间试验,设氮、磷、钾3个因素,4个水平,共14个处理,研究不同处理水稻产量、经济性状、经济效益。[结果]氮肥与水稻产量的相关性最好,磷、钾肥次之;施氮量(N)270.0 kg/hm^2,施磷量(P2O5)180.0 kg/hm^2,施钾量(K2O)150.0 kg/hm^2处理的经济效益最高,达25 821.0元/hm^2,比不施肥增收9 328.5元/hm^2,增幅56.6%。[结论]结合当地生产情况,建议水稻施肥量为氮肥(N)283.2 kg/hm^2、磷肥(P2O5)151.5 kg/hm^2、钾肥(K2O)156.0 kg/hm^2。

[ Objective ] The aim was to reduce the fertilizer cost of rice in Jiuyishan Country, Ningyuan County, Hunan Province, provide reference for promoting yield and income increasing. [ Method] With T You 227 as test variety, ＂3414＂ field experiment was carried out in Shangdong Village, Jiuyishan Country, setting up three factors of N, P, K, four levels, a total of 14 treatments,the rice yield, economic traits and economic benefits in different treatments were studied. [ Result ] N fertilizer had the best correlation with rice yield ; when application amount of N, P2O5 and K2O was 270.0, 180.0, 150.0 kg/hm^2, respectively, the highest economic benefits could be obtained, up to 25 281.0 Yuan/hm^2 ,which was increased 9 328.5 Yuan/hm2 compared with no fertilization With an amplitude of 56.6%. [ Conclusion] According to local situation, the application amount of N, P2O5 and K2O0 for rice was suggested as 283.2, 151.5, 156.0 kg/hm^2 respectively.