CAJ | 학술논문

通过“3414”田间肥效试验研究了氮、磷、钾肥施用量在早稻、晚稻之间的合理配比及对产量和养分吸收利用的影响。结果表明，早稻增施钾肥、晚稻增施氮肥增产效应明显，早稻施K2O 112.5 kg/hm2和晚稻施纯N 247.5 kg/hm2时可分别获得最高产量，分别为5974 kg/hm2和8627 kg/hm2，增产率分别为10.9%和29.3%。早稻的肥料利用率结果显示，在不同施氮水平下，早稻施纯N 165.0 kg/hm2时的氮肥贡献率和氮肥农学利用率最高，分别为13.8%和4.9 kg/kg；在不同施磷水平下，施P2O530.0 kg/hm2时的磷肥贡献率和磷肥农学利用率最高，分别为5.9%和11.5 kg/kg；在不同施钾水平下，施K2O 112.5 kg/hm2和37.5 kg/hm2时的钾肥贡献率和钾肥农学利用率分别达到最高，为9.9%和7.9 kg/kg。晚稻的肥料利用率结果显示，在不同氮水平下，晚稻施纯N 247.5 kg/hm2时的氮肥贡献率最高，为22.7%，施纯N 165.0 kg/hm2时的氮肥农学利用率最高，为9.9 kg/kg；在不同施磷水平下，施P2O560.0 kg/hm2时的磷肥贡献率最高，为7.1%，施P2O530.0 kg/hm2时的磷肥农学利用率最高，为11.7 kg/kg；在不同施钾水平下，施钾75.0 kg/hm2时钾肥贡献率和钾肥农学利用率最高，分别为9.9%和11.0 kg/kg。
통과“3414”전간비효시험연구료담、린、갑비시용량재조도、만도지간적합리배비급대산량화양분흡수이용적영향。결과표명，조도증시갑비、만도증시담비증산효응명현，조도시K2O 112.5 kg/hm2화만도시순N 247.5 kg/hm2시가분별획득최고산량，분별위5974 kg/hm2화8627 kg/hm2，증산솔분별위10.9%화29.3%。조도적비료이용솔결과현시，재불동시담수평하，조도시순N 165.0 kg/hm2시적담비공헌솔화담비농학이용솔최고，분별위13.8%화4.9 kg/kg；재불동시린수평하，시P2O530.0 kg/hm2시적린비공헌솔화린비농학이용솔최고，분별위5.9%화11.5 kg/kg；재불동시갑수평하，시K2O 112.5 kg/hm2화37.5 kg/hm2시적갑비공헌솔화갑비농학이용솔분별체도최고，위9.9%화7.9 kg/kg。만도적비료이용솔결과현시，재불동담수평하，만도시순N 247.5 kg/hm2시적담비공헌솔최고，위22.7%，시순N 165.0 kg/hm2시적담비농학이용솔최고，위9.9 kg/kg；재불동시린수평하，시P2O560.0 kg/hm2시적린비공헌솔최고，위7.1%，시P2O530.0 kg/hm2시적린비농학이용솔최고，위11.7 kg/kg；재불동시갑수평하，시갑75.0 kg/hm2시갑비공헌솔화갑비농학이용솔최고，분별위9.9%화11.0 kg/kg。
To study the effects of nitrogen, phosphorus and potassium on yield and fertilizer use efficiency of double-rice in southeast Hubei,“3414” fertilizer experiment was conducted in Wuxue county, Hubei province. The results showed that when 112.5 kg/hm2 K2O was used for early rice, effect of potassium fertilizer on yield was good and the yield and rate of growth were 5 974 kg/hm2 and 10.9%, respectively. For the second rice, using 247.5 kg/hm2 N was good and the yield and the rate of growth were 8 627 kg/hm2, 29.3%. The fertilizer use efficiency showed that for the early season rice, applying 165.0 kg/hm2 N led to higher fertilizer contribution rate and agronomic efficiency than other levels of N use, which were 13.8% and 4.9 kg/kg, respectively. Using 30.0 kg/hm2 P2O5 detained higher fertilizer contribution rate and agronomic efficiency than other levels of P2O5 use and the value were 5.9% and 11.5 kg/kg, respectively. Applying K2O of 112.5 kg/hm2 and 37.5 kg/hm2 could obtain higher fertilizer contribution rate and agronomic efficiency with 9.9% and 7.9 kg/kg. For the second rice, apply-ing 247.5 kg/hm2 N led to high fertilizer contribution rate of 22.7% while applying 165.0.0 kg/hm2 obtained agronomic effi-ciency of 9.9 kg/kg. Using 60.0 kg/hm2 P2O5 obtained high fertilizer contribution rate of 7.1% and the agronomic efficiency of 11.7 kg/kg better than that of using 30.0 kg/hm2 P2O5. Applying 75.0 kg/hm2 K2O obtained fertilizer contribution rate and a-gronomic efficiency of 9.9% and 11.0 kg/kg higher than other levels of K2O.