CAJ | 학술논문

在黔东南地区进行水稻增产氮肥施用技术的田间试验，对不同总氮占比穗肥对水稻产量的影响进行了研究。结果表明，水稻孕穗期施用氮肥能使植株生长旺盛，有效穗和成穗率增加，总粒数增多，产量增加19.9~47.9kg/667m2，增幅达3.5%~8.4%。施氮占比为15%和20%时，增产效果较好，与不施氮对照相比，差异达显著水平。但与对照相比，各处理病虫害发生略有加重，结实率略为减少，生育期稍有延长，并随着穗肥施氮占比的增加而有所加重。应根据不同气候、土壤以及产量水平，确定最佳氮肥施用总量，在孕穗期选择适宜的总氮施用比例，适当提早施用氮肥。
재검동남지구진행수도증산담비시용기술적전간시험，대불동총담점비수비대수도산량적영향진행료연구。결과표명，수도잉수기시용담비능사식주생장왕성，유효수화성수솔증가，총립수증다，산량증가19.9~47.9kg/667m2，증폭체3.5%~8.4%。시담점비위15%화20%시，증산효과교호，여불시담대조상비，차이체현저수평。단여대조상비，각처리병충해발생략유가중，결실솔략위감소，생육기초유연장，병수착수비시담점비적증가이유소가중。응근거불동기후、토양이급산량수평，학정최가담비시용총량，재잉수기선택괄의적총담시용비례，괄당제조시용담비。
In order to explore the rice N fertilizer application technology,guide the agriculturalproduction, itdesigns tests under purified N as 7.5kg/667m 2 and panicle fertilizer w ith T otal N ratio as 6 factors of 0% ,5% ,10% ,15% ,20% ,25% .T he result show s that: D uring R ice B ooting Stage im plying N fertilizerthe rice grow s strongly,effective panicles and E arbearing T illerR ate increase and grains increase.Itshow s thatin area of 667m 2 the yield increases 19.9kg to 47.9kg w ith grow th of 3.5% to 8.4% .D uring the results,ratios of N as 15% and 20% have the better yield.T hey have significance levels than contract as N ratio of 0% .H ow ever during im plying panicle fertilizer, the pest situation w entw orse,Seed setting rate slightly reduced and G row th period extend slightly w ith increase of N ratios.Itconsiders itas the key factors of technology for rice yield to verify the optim um quantity of N fertilizer and during R ice B ooting Stage to grasp the quantity and ratio of N fertilizerand to im ply N fertilizerearlierand properly.