CAJ | 학술논문

2010～2011年在吉林省梨树县进行春玉米5个播期试验(SE、E、M、L、SL为2010年4月21日、5月2日、5月13日、5月23日及6月2日播期，2011年为4月20日、4月30日、5月10日、5月20日及6月1日播期)，探讨播期对吉林春玉米生长发育和产量形成的影响。结果表明,播期对春玉米生长发育及产量形成均有显著的影响。随播期推迟，春玉米生育期缩短；相对于SE和SL处理，M处理下叶面积指数较高且维持天数较长，有利于春玉米光合作用以及干物质积累；播期对春玉米地上干物质积累的影响表现为SE与M处理间差异不大，SL与SE、M处理相比干物质积累明显降低。试验播期范围内播期对产量影响显著，随播期的推迟呈现先升高后降低的趋势；百粒重在SE、E和M处理间无差异，与前3个播期相比，由于灌浆期缩短导致L和SL处理的百粒重显著下降；穗粒数与开花-子粒形成期内降水量呈显著负相关。本试验在2010年M处理下获得最大产量(11490.6 kg/hm2)，吉林西南部春玉米播期在5月中旬左右较为适宜。
2010～2011년재길림성리수현진행춘옥미5개파기시험(SE、E、M、L、SL위2010년4월21일、5월2일、5월13일、5월23일급6월2일파기，2011년위4월20일、4월30일、5월10일、5월20일급6월1일파기)，탐토파기대길림춘옥미생장발육화산량형성적영향。결과표명,파기대춘옥미생장발육급산량형성균유현저적영향。수파기추지，춘옥미생육기축단；상대우SE화SL처리，M처리하협면적지수교고차유지천수교장，유리우춘옥미광합작용이급간물질적루；파기대춘옥미지상간물질적루적영향표현위SE여M처리간차이불대，SL여SE、M처리상비간물질적루명현강저。시험파기범위내파기대산량영향현저，수파기적추지정현선승고후강저적추세；백립중재SE、E화M처리간무차이，여전3개파기상비，유우관장기축단도치L화SL처리적백립중현저하강；수립수여개화-자립형성기내강수량정현저부상관。본시험재2010년M처리하획득최대산량(11490.6 kg/hm2)，길림서남부춘옥미파기재5월중순좌우교위괄의。
The experiments with five sowing-date treatments(SE, E, M, L, SL were April 21, May 2, May 13, May 23 and June 2 in 2010 and April 20, April 30, May 10, May 20 and June 1 in 2011) of spring maize in 2010-2011 were conducted at Lishu county in Jilin province. The effects of sowing date on the growth, development and yield for-mation were studied. The results showed that the sowing dates had a significant impact on the growth, development and yield formation of spring maize. Compared with the SE and SL treatments, day number of leaf area index with rel-atively higher value under M treatment was longer, which is beneficial for the photosynthesis and dry matter accumu-lation of spring maize. The comparison of above-ground dry matter accumulation under different treatments showed that there was little difference between SE, E and M treatments, however, that of L and SL was lower than SE, E and M treatments. Within the range of sowing dates , maize yield increased firstly and then decreased with the sowing dates postponing. The kernel weight under L and SL was lower than that of SE, E and M treatments due to shorter grain-fill-ing period. There was a significant negative correlation between the precipitation during the flowering and grain for-mation period and the grains per spike. Maximum yield(11 490.6 kg/ha) could be obtained under M treatments in 2010. Therefore, the appropriate sowing date of spring maize in southwestern Jinlin province was recommended to be arranged in middle May.