CAJ | 학술논문

以超级杂交稻 H 优518为材料，研究了不同追肥时期和施肥量对机插双季晚稻产量和经济效益的影响。结果表明：移栽后6 d 开始追肥处理的有效穗数最多，平均382.5万穗／hm2；移栽后8 d 开始追肥处理的穗总粒数最多，平均为109.4粒，分别比移栽后4 d 和6 d 开始追肥处理增加0.9和0.6粒；各处理间结实率无明显差异；移栽后6 d 开始追肥处理的平均产量最高，分别比移栽后4 d 和8 d 开始追肥处理增产3.9％和4.3％。经济效益的大小顺序为移栽后6 d 开始追肥＞移栽后4 d 开始追肥＞移栽后8 d 开始追肥。在本试验条件下，洞庭湖平原区双季机插晚稻适宜的追肥时间以栽插后6 d 左右为佳，施用量宜少，以单质氮肥和钾肥为主；进入分蘖始盛期后肥料宜重施，以速效氮肥和复合肥为主。
이초급잡교도 H 우518위재료，연구료불동추비시기화시비량대궤삽쌍계만도산량화경제효익적영향。결과표명：이재후6 d 개시추비처리적유효수수최다，평균382.5만수／hm2；이재후8 d 개시추비처리적수총립수최다，평균위109.4립，분별비이재후4 d 화6 d 개시추비처리증가0.9화0.6립；각처리간결실솔무명현차이；이재후6 d 개시추비처리적평균산량최고，분별비이재후4 d 화8 d 개시추비처리증산3.9％화4.3％。경제효익적대소순서위이재후6 d 개시추비＞이재후4 d 개시추비＞이재후8 d 개시추비。재본시험조건하，동정호평원구쌍계궤삽만도괄의적추비시간이재삽후6 d 좌우위가，시용량의소，이단질담비화갑비위주；진입분얼시성기후비료의중시，이속효담비화복합비위주。
The effects of different time and application amount of fertilizer on the yield and economic benefits of machine transplanting late rice by using H you 518 as material were studied in the present paper.The results showed that the num-ber of effective tillers were highest with 382.5 ten thousand per ha under the treatment of application fertilizer 6 days after transplanting.And the grain numbers per spike were highest with 109.4 kernel under the treatment of application fertilizer 8 days after transplanting,which increased by 0.9 and 0.6 kernel per spike compared with the treatments of application fertilizer 4 days and 6 days after transplanting.There were no significant differences in the seed setting rate among treat-ments.The yield of the treatment of application fertilizer 6 days after transplanting was increased by 3.9% and 4.3% than that of the treatments 4 days and 8 days after transplanting respectively.And the economic benefits of these three treatments showed the tendency of treatment 6 days after transplanting >treatment 4 days after transplanting >treatment 8 days after transplanting.The results indicated that the best date of application fertilizer was 6 days after transplanting,and the appli-cation amount of fertilizer were lightly,elemental nitrogen and potassium fertilizer.After the tillering stage,the application amount of fertilizer was increased,and the kinds of fertilizer were available nitrogen and compound fertilizer.