CAJ | 학술논문

以‘武运粳24’为试验材料，研究在同一种植密度条件下，5个不同播幅对机条播水稻产量及其生长发育的影响。结果表明：在本试验条件下，条播水稻的产量随着播幅的增大呈现先增加后减小的趋势，以播幅为5 cm 时的产量最高，达到9．064 t？hm2；播幅的增大有利于提高中期水稻分蘖能力和缓解高峰苗后分蘖消亡速率，播幅5 cm 的高峰苗数比2 cm 的增加了8．1％，而无效分蘖消亡速度降低了9．9％，最终有效穗数多；播幅5 cm 基部第一、二节间总长比2 cm 处理减少了3．32 cm；高效叶面积比例比2 cm 处理增加了3．47，播幅大的处理节间和上层叶面积的配置更加合理，更易于塑造抗倒和高光效群体。
이‘무운갱24’위시험재료，연구재동일충식밀도조건하，5개불동파폭대궤조파수도산량급기생장발육적영향。결과표명：재본시험조건하，조파수도적산량수착파폭적증대정현선증가후감소적추세，이파폭위5 cm 시적산량최고，체도9．064 t？hm2；파폭적증대유리우제고중기수도분얼능력화완해고봉묘후분얼소망속솔，파폭5 cm 적고봉묘수비2 cm 적증가료8．1％，이무효분얼소망속도강저료9．9％，최종유효수수다；파폭5 cm 기부제일、이절간총장비2 cm 처리감소료3．32 cm；고효협면적비례비2 cm 처리증가료3．47，파폭대적처리절간화상층협면적적배치경가합리，경역우소조항도화고광효군체。
The keng rice cultivar ‘Wuyunjing 24’was used as a test material,and effects of 5 different so-wing widths on the growth and yield of machine-drilled rice were investigated at the same planting density.The results showed that in this test conditions the yield increased at first and then decreased with the sowing width in-creasing,and when the sowing width was 5 cm the yield was the highest,or 9.064 t?hm2;The increase of sowing width helped to improve the mid-term rice’s tillering ability and alleviate the tiller death rate after peak tillering;Compared with the 2-cm sowing width,the 5-cm sowing width treatment made the peak of seedling number in-crease by 8.1% and the ineffective tillering rate decrease by 9.9%,thus gaining more ear-bearing tillers;The basal first 2 internodes’length under the 5-cm sowing width treatment was 3.32 cm less than that under the 2-cm sowing width treatment but the proportion of efficient leaf area increased by 3.47;The larger sowing width treatment made the internode and upper leaf area configuration more reasonable and easily formed the plant popu-lation with lodging resistance and high photosynthetic efficiency.