CAJ | 학술논문

为研究糯小麦和普通小麦植株生长发育和籽粒产量对氮素水平响应的差异，在大田条件下，以糯50222和轮选987为试验材料，设计3个氮肥处理（0，100，200 kg／hm2），结果表明：糯50222植株的分蘖力和成穗率均低于轮选987，最终表现为单位面积穗数明显低于后者；但糯50222的穗粒数明显高于轮选987。2个品种籽粒干物质积累均呈“S”型变化，灌浆速率呈单峰曲线变化，且糯50222的灌浆速率小于轮选987，导致其千粒质量低于轮选987。增施氮肥后，糯50222的分蘖增多，成穗率增大，穗数增加；而轮选987的穗数也增多，但是分蘖成穗率表现为先增后降的趋势。增施氮肥促进了糯50222植株茎、叶和鞘部干物质向籽粒的转移，而轮选987呈相反趋势，但两品种的千粒质量均呈下降趋势。施氮在0～200 kg／hm2内，与轮选987小麦产量出现了先增后降的趋势不同，农大糯50222小麦产量随着施氮量的增加而提高。
위연구나소맥화보통소맥식주생장발육화자립산량대담소수평향응적차이，재대전조건하，이나50222화륜선987위시험재료，설계3개담비처리（0，100，200 kg／hm2），결과표명：나50222식주적분얼력화성수솔균저우륜선987，최종표현위단위면적수수명현저우후자；단나50222적수립수명현고우륜선987。2개품충자립간물질적루균정“S”형변화，관장속솔정단봉곡선변화，차나50222적관장속솔소우륜선987，도치기천립질량저우륜선987。증시담비후，나50222적분얼증다，성수솔증대，수수증가；이륜선987적수수야증다，단시분얼성수솔표현위선증후강적추세。증시담비촉진료나50222식주경、협화초부간물질향자립적전이，이륜선987정상반추세，단량품충적천립질량균정하강추세。시담재0～200 kg／hm2내，여륜선987소맥산량출현료선증후강적추세불동，농대나50222소맥산량수착시담량적증가이제고。
Field experiment was conducted to study the response of wheat plant growth and development and grain yield of LX987 and N50222 to nitrogen ( N) rate.Three treatments were designed with N of 0,100,200 kg/ha,respectively .The results indicated that the ability for tillering and percentage of earbearing tiller of N 50222 were inferior to LX987 ,which caused spike number of unit area of N 50222 was lower than LX987;But grain number per spike of N50222 was significantly higher than LX987.The accumulation of dry matter in grain of two varieties all showed "S"type,the grain filling rate showed unimodal curve ,and the filling rate of N50222 was less than LX987 which results in 1 000-grain weight was lower than LX987.The tillering,earbering tiller percentage and the spike number of N50222 increased with increasing of N;the spike number of LX987 was also increased ,and earber-ing tiller percentage showed a tendency of up then down .Increasing N fertilizer promoted the transfer of dry matter of N50222 from plant stem ,leaf and sheath to the kernel ,which was different with LX 987 ,the 1 000-grain weight of N50222 and LX987 all showed a tendency of falling .In a range of 0-200 kg/ha,the yield of N50222 was advanced with increasing of N ,but the yield of LX987 showed a tendency of up then down .