CAJ | 학술논문

为了筛选出适合湖南双季稻生产的配方复合肥及追肥模式，采用田间试验的方法，在湖南长沙县开慧镇、干杉镇，岳阳县麻塘镇（晚稻在新墙镇）典型双季稻区开展了水稻氮磷钾肥料配方及2次追肥的增产效果研究。结果表明：与主推的配方肥（早、晚稻 N-P2O5-K2O分别为20-10-10和26-10-13）相比，优化配方肥（分别增加磷钾比例）适当减氮，早稻保持平产，晚稻增产187.5～378.0 kg/hm2，增产幅度为2.6%～5.9%。其中，N-P2O5-K2O为18-14-16配方适合早稻的生产，N-P2O5-K2O为18-9-16配方适合晚稻的生产。在追肥量一定的条件下，分蘖期、孕穗期分次追肥较分蘖期一次追肥早稻增产187.5～382.5 kg/hm2，氮肥利用率提高10.9～24.2个百分点；晚稻增产258.0～415.5 kg/hm2，氮肥利用率提高8.3～13.4个百分点。
위료사선출괄합호남쌍계도생산적배방복합비급추비모식，채용전간시험적방법，재호남장사현개혜진、간삼진，악양현마당진（만도재신장진）전형쌍계도구개전료수도담린갑비료배방급2차추비적증산효과연구。결과표명：여주추적배방비（조、만도 N-P2O5-K2O분별위20-10-10화26-10-13）상비，우화배방비（분별증가린갑비례）괄당감담，조도보지평산，만도증산187.5～378.0 kg/hm2，증산폭도위2.6%～5.9%。기중，N-P2O5-K2O위18-14-16배방괄합조도적생산，N-P2O5-K2O위18-9-16배방괄합만도적생산。재추비량일정적조건하，분얼기、잉수기분차추비교분얼기일차추비조도증산187.5～382.5 kg/hm2，담비이용솔제고10.9～24.2개백분점；만도증산258.0～415.5 kg/hm2，담비이용솔제고8.3～13.4개백분점。
The effect of different formula of NPK and twice topdressings on rice growth in typical double cropping rice area, which located at Kaihui, Ganshan, Matang and Xinqiang towns, were studied on field experiment in order to select the formula of compound fertilizer and top dressing mode for double cropping of rice production in Hunan. The results showed that the optimized formulated fertilizer treatment, which increased the proportion of phosphorus and potassium and reduced its nitrogen fertilizer by 7.5 kg/hm2, can ensure early rice stable. Fpr example, the yield of late rice increased by 187.5-378.0 kg/hm2 compared with the conventional complex fertilizer (N-P2O5-K2O formula of 20-10-10 for early rice and 26-10-13 for late rice). The N-P2O5-K2O formula 18-14-16 of optimized formulated fertilizer which was suitable for early rice production, and the other N-P2O5-K2O formula 18-9-16 was suitable for late rice production. The rice yields for top-dressing at til er-ing stage and booting stage can increased by 187.5-382.5 and 258.0-415.5 kg/hm2 for early and late rice and the nitrogen use efficiency advanced 10.9-24.2 percent-age points (31.5%-51.1%) for early rice and 8.3-13.4 percentage points (36.2%-64.9%) for late rice compared with the top-dressing at til ering stage.