CAJ | 학술논문

以新玉15号为供试品种，研究了春播和麦后复播青贮玉米（复播1期，6月30日播种；复播2期，7月10日播种）在产量、干物质积累和光温气候资源利用等方面的差异。结果表明：春播、复播1期、复播2期的群体干物质产量分别为15615、17615、14671 kg·hm－2，春播、复播1期、复播2期鲜重产量53988、67251、68327 kg·hm－2；复播青贮玉米生育期明显缩短，光合有效辐射和≥10℃积温较春播少；复播1期苗期、穗期、灌浆期均处于最适温度范围之内；春播、复播1期、复播2期的 LA I峰值为5．01、5．72、6．36，总光合势分别为2．45×106、2．84×106、3．37×106 m2·d－1·hm－2。复播青贮玉米的产量潜力主要在于大口期之前生育期优越的光温资源条件，且大口期之前干物质积累速率较春播快。
이신옥15호위공시품충，연구료춘파화맥후복파청저옥미（복파1기，6월30일파충；복파2기，7월10일파충）재산량、간물질적루화광온기후자원이용등방면적차이。결과표명：춘파、복파1기、복파2기적군체간물질산량분별위15615、17615、14671 kg·hm－2，춘파、복파1기、복파2기선중산량53988、67251、68327 kg·hm－2；복파청저옥미생육기명현축단，광합유효복사화≥10℃적온교춘파소；복파1기묘기、수기、관장기균처우최괄온도범위지내；춘파、복파1기、복파2기적 LA I봉치위5．01、5．72、6．36，총광합세분별위2．45×106、2．84×106、3．37×106 m2·d－1·hm－2。복파청저옥미적산량잠력주요재우대구기지전생육기우월적광온자원조건，차대구기지전간물질적루속솔교춘파쾌。
A filed experiment was conducted to compare spring and multiple cropping silage corn regarding grain yield ,dry matter accumulation ,utilization of solar ,heat resources .The results indicated dry matter accumulation of the sowing dates on April 28 th ,sown June 30 th ,sown July 10 th were 15 615 ,17 615 ,14 671 kg·hm-2 ,respectively and those of fresh matter weight 53 988 ,67 251 ,68 327 kg·hm-2 ,respectively .Growth duration of multiple cropping silage corn was reduced and photosynthetic active radiation and ≥10℃ accumulated temperature were lower than spring sow-ing .Seeding stage ,heading stage ,filling stage of sown June 30 th fell into the optimum range of temperature .LAImax and total photosynthetic potential of sowing dates on April 28 th ,sown June 30 th ,sown July 10 th reached 5 .01 ,5 .72 , 6 .36 and 2 .45 .× 106 m2·d-1·hm-2 ,2 .84 × 106 m2·d-1·hm-2 ,3 .37 × 106 m2·d-1·hm-2 ,respectively .Multiple cropping silage corn had a higher dry matter accumulation than spring silage maize ,because of suitable solar and temper-ature .