论文部分内容阅读
1982—1983年在白浆土田间小区上进行了10个大豆品种的结瘤和固氮状况的研究,所得结果表明: 1.大豆品种间结瘤和固氮活性的季节动态趋势一致;但是,品种间结瘤状况、固氮活性水平、固氮速率和田间阶段累积固氮量都有较大差别。各指标之间具有高度显著的相关性。 2.在大豆籽实发育之前的各生育期中,有效瘤干重同其地上干重之间,有效瘤干重及其平均个体干重同单株固氮总活性之间,以及大豆开花至成熟各阶段的生物学产量同其阶段累积固氮量之间,都呈现高度显著的相关性。 3.在大豆生育前一中期遭低温寡照天气条件,影响现瘤期及其固氮活性初显日期。
The results of nodulation and nitrogen fixation of 10 soybean cultivars in Albic soil from 1982 to 1983 show that: 1. The seasonal dynamics of nodulation and nitrogen fixation activity among soybean varieties are consistent; however, The nodulation status, the level of nitrogen fixation activity, the rate of nitrogen fixation and the cumulative nitrogen fixation amount in field stage all have great differences. Each index has a highly significant correlation. In each growth stage before the development of soybean seeds, the effective tumor weight and its dry weight, the effective weight of dry weight and the average individual dry weight with the total nitrogen fixation activity, and the flowering of soybean to mature stages Of the biological yield and its stage of cumulative nitrogen fixation, all showed a highly significant correlation. 3. In the middle and early days of soybean growth by low temperature weather conditions, affecting the tumor stage and nitrogen fixation activity of the date.