大麦与谷类科学

为在江苏沿海农区盐土上推广种植优良食味水稻，以迟熟中粳稻南粳9108为试验材料，通过设置3种氮肥运筹模式——习惯施肥(FFP)、缓释肥料(CRU)和实地氮肥管理(SSNM)，研究不同氮肥运筹模式对水稻生长、产量及氮肥吸收利用的影响。结果表明，实地氮肥(SSNM)处理能够有效减少水稻南粳9108生长前期的无效分蘖，获得较高成穗率(77.19%)，并以较低的氮肥投入(220 kg/hm²)获得较高的产量(8 730 kg/hm²)，其氮肥吸收利用率为32.3%；习惯施肥(FFP)下南粳9108产量为8 571 kg/hm²，其氮肥吸收利用率为30.3%；缓释肥料(CRU)处理下，南粳9108产量为7 985 kg/hm²，其氮肥吸收利用率仅为22.3%。因此，在试验盐土上推广种植南粳9108，可优先采用实地氮肥模式(SSNM)，习惯施肥模式(FFP)也具有一定现实可行性。

In order to promote the cultivation of excellent tasting rice on saline soil in coastal agricultural areas of Jiangsu Province,the late medium geng-rice variety Nangeng 9108 was used as experimental material,and three different nitrogen application including FFP(farmer’s conventional fertilization),CRU (slow release fertilizer) and SSNM (site-specific nitrogen management)) were conducted to study the effects of different nitrogen fertilizer management modes on rice growth,yield,and nitrogen fertilizer absorption and utilization.The results showed that SSNM treatment could effectively reduce ineffective tillering at the early growth stage of Nangeng9108,achieve a high panicle formation rate of 77.19%,and obtain a high yield (8 730 kg/hm²) with a lower nitrogen fertilizer input(220 kg/hm²),and NUE (nitrogen use efficiency) was 32.3%.Under the FFP treatment,the yield of Nangeng 9108 was 8 571 kg/hm²,and NUE was 30.3%.Under the treatment of CRU,the yield of Nangeng 9108 was 7 985 kg/hm²,but NUE was only 22.3%.Therefore,to promote the planting of Nangeng 9108 on experimental saline soil,the SSNM can be prioritized,and the FFP also has certain practical feasibility.