论文部分内容阅读
为探索寒地超高产大豆生长发育及产量形成机理,采用3个基因型品种,2种栽培模式,共设3个处理研究半矮秆大豆窄行密植超高产生长发育动态。结果表明:在窄行、密植、高肥水条件下,B45处理由于采用半矮秆品种,尽管单株干物重、叶面积显著低于对照,但群体干物重显著增加,LAI早于G70对照8 d达到峰值,最高为8.081,在8月11日前LAI长时间保持在7.0以上,各生育时期叶绿素含量、净光合速率明显高于对照,均为光合产物积累及4 895.7 kg.hm-2的产量形成奠定了基础;Z45处理虽然选用亚有限秆强品种,随着密度增加倒伏严重;G70处理应用高秆品种稀植栽培,个体发育较好,但群体性状较差。
In order to explore the growth and yield formation mechanism of super high-yielding soybean in cold region, three genotypes and two cultivation modes were used to study the growth and development of the semi-dwarf soybean narrow row and close planting in super high yield. The results showed that under the condition of narrow row, dense planting and high fertilizer and water, the dry matter weight of B45 treatment increased significantly as the semi-dwarf varieties were used, although the dry matter weight and leaf area per plant were significantly lower than those of the control. Reaching a peak value of 8.081. LAI remained at 7.0 or above for a long time before August 11, and the chlorophyll content and net photosynthetic rate in all growth stages were significantly higher than those in the control, which were the photosynthate accumulation and the yield of 4895.7 kg.hm-2 Which laid the foundation for the treatment of Z45. Although the selection of sub-limited stalk-hard varieties, lodging with serious density lodging serious; G70 application of high-stalk varieties and thin planting cultivation, the individual development is better, but the group traits are poor.