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采用单因素随机区组试验设计,在滴灌条件下,对北疆复播大豆不同密度茎节性状、荚粒时空分布以及产量构成因素等进行了研究。结果表明:单株荚数、单株空荚数、单株粒数随密度的增大而降低;主要改变了荚粒在上层和下层的分布比例,而对中层荚粒所占比例影响很小。着粒密度则随着密度的增加而降低,最低密度处理较最高密度处理着粒密度提高了63.16%。随着密度的增大,株高增高,茎节节间长度呈增大趋势,而茎粗呈现减小趋势。产量随着密度的增加呈现开口向下的抛物线变化趋势。试验设计条件下以52.5万株·hm-2密度处理的产量最高,为3 205.04 kg·hm-2,与其他处理差异均达到了极显著水平(P<0.01)。
Under the condition of drip irrigation, single-factor randomized block design was used to study the characteristics of different density stems and stems, spatiotemporal distribution of pod kernels and yield components of sowing in northern Xinjiang. The results showed that the number of pod per plant, the number of empty pods per plant and the number of single plant per plant decreased with the increase of density. The distribution of pods in the upper layer and the lower layer mainly changed, while the proportion of pods in the middle layer was very small . Grain densities decreased with increasing density, and grain densities increased by 63.16% at the lowest density compared to the highest density. With the increase of density, plant height increased, the length of internodes increased, while the stems showed a decreasing trend. The yield shows a downward parabolic trend with increasing density. Under the experimental design conditions, the yield of 525000 plants · hm-2 was the highest, which was 3 205.04 kg · hm-2, which reached the extremely significant difference with other treatments (P <0.01).