CAJ | 학술논문

以一等优质晚稻湘晚籼17号为试验材料，设置三个不同的氮肥水平，研究节氮条件下晚稻倒伏对拟环纹豹蛛种群动态的影响，以期为优质晚稻的绿色生产提供科学依据。结果表明，各生育时期拟环纹豹蛛种群数量均随施氮量的增加而显著减少，稻飞虱种群数量均随施氮量的增加而显著增加；直立植株的拟环纹豹蛛、稻飞虱种群数量随着晚稻生育进程的推进表现出先增后降的趋势，拟环纹豹蛛种群数量在齐穗期达到最大，稻飞虱种群数量在乳熟期达到最大；乳熟期水稻植株发生倒伏后，拟环纹豹蛛逐渐由直立植株迁移到倒伏植株，而稻飞虱则由倒伏植株迁移到直立植株，施氮量越高，倒伏指数越大，迁移越明显，倒伏植株与直立植株间的种群增长率越大，各处理间差异达显著水平。
이일등우질만도상만선17호위시험재료，설치삼개불동적담비수평，연구절담조건하만도도복대의배문표주충군동태적영향，이기위우질만도적록색생산제공과학의거。결과표명，각생육시기의배문표주충군수량균수시담량적증가이현저감소，도비슬충군수량균수시담량적증가이현저증가；직립식주적의배문표주、도비슬충군수량수착만도생육진정적추진표현출선증후강적추세，의배문표주충군수량재제수기체도최대，도비슬충군수량재유숙기체도최대；유숙기수도식주발생도복후，의배문표주축점유직립식주천이도도복식주，이도비슬칙유도복식주천이도직립식주，시담량월고，도복지수월대，천이월명현，도복식주여직립식주간적충군증장솔월대，각처리간차이체현저수평。
This study use first-class quality rice-xiangw anxian 17 as test m aterial and set three nitrogen level [N 1: 105 kg/hm 2 ( low nitrogen dose) ;N 2: 135 kg/hm 2 (low nitrogen dose) ;N 3: 165 kg/hm 2 (regular nitrogen dose) ] to provide scientific basis for the green production ofquality late rice,study the population dynam icsofpardosa pseudoannulata w ith late rice lodging undernitrogen-reduction m easures. The results show ed: the pardosa pseudoannulata population of late rice decreased w ith the increase of nitrogen rate, but the planthoppers increased significantly; the population of pardosa pseudoannulata and planthoppers first increased and then decreased w ith advancing ofgrow ing process and reached m axim um atfullheading stage、 m ilk stage respectively,pardosa pseudoannulata m igrated from upright plants to lodging plants, w hich is opposite to planthoppers after lodging at the full heading stage. The population grow th rate、lodging index、 m igration w as increasingly high w ith the grow ing nitrogen rate ,difference w as significant to each treatm ent.respectively w hen com pared w ith uprightplants,and the population increm ent (PI)、 population relative increm ent (PG R ) ofdough stage w aslessthan m aturity stage 15.8% 、 275.8% respectively.