CAJ | 학술논문

　　为探讨施氮量对超级双季早稻产量及氮肥吸收利用的影响，以超级杂交早稻‘新丰优22’和‘金优458’为材料，设置6个施氮水平，研究不同施氮量对超级双季早稻产量和氮肥吸收利用的影响。结果表明：施氮处理水稻产量显著高于不施氮处理，‘新丰优22’最高的N4比N0提高了120.86%，‘金优458’ N4比N0提高了145.34%，在0~195 kg/hm2范围内，籽粒产量随施氮量的增加而增加，当氮肥施用量达到195 kg/hm2时产量最高，而后有所下降；在低氮水平下，增加氮肥施用量有利于提高单位面积水稻有效穗数、稻谷和稻草的氮吸收量；成熟期籽粒含氮量随施氮量的增加有明显增加的趋势；氮肥农学效率和氮肥偏生产力均随施氮量的增加而降低，‘金优458’氮肥农学效率是N1>N2>N3>N4>N5，‘新丰优22’为N1>N4>N2>N3>N5。
　　위탐토시담량대초급쌍계조도산량급담비흡수이용적영향，이초급잡교조도‘신봉우22’화‘금우458’위재료，설치6개시담수평，연구불동시담량대초급쌍계조도산량화담비흡수이용적영향。결과표명：시담처리수도산량현저고우불시담처리，‘신봉우22’최고적N4비N0제고료120.86%，‘금우458’ N4비N0제고료145.34%，재0~195 kg/hm2범위내，자립산량수시담량적증가이증가，당담비시용량체도195 kg/hm2시산량최고，이후유소하강；재저담수평하，증가담비시용량유리우제고단위면적수도유효수수、도곡화도초적담흡수량；성숙기자립함담량수시담량적증가유명현증가적추세；담비농학효솔화담비편생산력균수시담량적증가이강저，‘금우458’담비농학효솔시N1>N2>N3>N4>N5，‘신봉우22’위N1>N4>N2>N3>N5。
To explore the effect of nitrogen application on yield and nitrogen use efficiency of super early rice, super early rice‘Xinfengyou22’and‘Jinyou458’was used as a test materials, designed 6 level of nitrogen, the effects of different nitrogen application on super double season early rice yield and nitrogen using efficiency were studied. The results showed that, the yield of the nitrogen treatment was significantly higher than N0,‘Xinfengyou22’N4 than N0 120.86%,‘Jinyou458’N4 than N0 145.34%, in 0-195 kg/hm2 range, the grain yield with nitrogen increased, when nitrogen application up to 195 kg/hm2 yield was the supreme, and then is decreased. In the low nitrogen level, increase nitrogen application was beneficial to improve rice effective panicles per unit area, grain and straw nitrogen uptake. Nitrogen content of the grain in the mature period with the increased amount of nitrogen significantly increased trend. Nitrogen agronomic efficiency and nitrogen partial productivity was decreased with the increased amount of nitrogen, nitrogen agronomic efficiency of‘Jinyou458’was N1>N2>N3>N4>N5,‘Xinfengyou22’was N1>N4>N2>N3>N5.