CAJ | 학술논문

对栽培条件下的4份无芒雀麦材料不同生育期单株地上总生物量及其构件生物量分配变化规律进行了初步研究.结果显示:植株地上总生物量,从拔节期到完熟期4份材料均呈逐渐升高的趋势,从孕穗期到完熟期奇台无芒雀麦和Elsberry无芒雀麦显著高于公农无芒雀麦(P<0.05).随生育期的推进,营养枝茎和叶生物量分配先降低后升高,生殖枝茎和花序生物量分配先升高后降低,生殖枝叶生物量分配逐渐降低,立枯体变化规律不明显.生殖生长过程中生殖枝生物量分配占57%～90%.各构件生物量分配中,生殖枝茎占较大比例为21%～53%,花序占3%～30%.在同一生育期,相同构件生物量分配4份材料间差异不显著.在植株构件生物量分配相对稳定的前提下,提高花序生物量是提高种子产量的有效途径.
대재배조건하적4빈무망작맥재료불동생육기단주지상총생물량급기구건생물량분배변화규률진행료초보연구.결과현시:식주지상총생물량,종발절기도완숙기4빈재료균정축점승고적추세,종잉수기도완숙기기태무망작맥화Elsberry무망작맥현저고우공농무망작맥(P<0.05).수생육기적추진,영양지경화협생물량분배선강저후승고,생식지경화화서생물량분배선승고후강저,생식지협생물량분배축점강저,립고체변화규률불명현.생식생장과정중생식지생물량분배점57%～90%.각구건생물량분배중,생식지경점교대비례위21%～53%,화서점3%～30%.재동일생육기,상동구건생물량분배4빈재료간차이불현저.재식주구건생물량분배상대은정적전제하,제고화서생물량시제고충자산량적유효도경.
Allocation of total aboveground biomass of individual and structural biomass of 4 brome grasses in their different growing time under cultivated conditions were studied. The results showed that the total aboveground biomass of the four materials increased gradually from node drawing to full mature while that of Bromus inermis Leyss. cv. "Qitai" and B. inermis Leyss. cv. "Elsberry" was obviously higher than B. inermis Leyss. cv. "Gongnong" from spike gestating to full mature (P<0.05). As growing time progressed, the allocation of biomass of stem and leaf decreased at first and then increased, but that of the stem of the reproductive shoots and inflorescence increased at first and then decreased, that of leaf in reproductive shoot decreased gradually, and the change of wilted parts among them was not regular. The biomass of reproductive shoots allocated was 57 %～900% during reproductive growth. The stem of reproductive shoots was 21% ～53 % and the inflorescence was 3 % ～30% in allocation of structural biomass. The difference in the allocation of the same structural biomass among 4 materials was not significant in the same growing stage. So improving the biomass of inflorescence was an effective way to increase the seed yield under the steady allocation of structural biomass.