密度对北疆复播大豆荚粒时空分布及产量形成的影响  

Effects of Planting Density on Yield Formation and Tempo-spatial Distribution of Pod and Seed of Summer Soybean in North Xinjiang

作　　者：张永强[1] 张娜[1] 唐江华[1] 徐文修[1] 王娜 郝维维[1] 李怀胜[1] 

机构地区：[1]新疆农业大学农学院,新疆乌鲁木齐830052 [2]新疆伊犁伊宁县农业技术推广中心,新疆伊犁835100

出　　处：《大豆科学》2014年第2期179-183,共5页Soybean Science

基　　金：国家自然科学基金(31260312);公益性行业(农业)科研专项(201103001);新疆干旱区水循环与水利用实验室开放题(XJYS0907-2012-04)

摘　　要：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)。The effects of planting density on the stem elongation, distribution of pod and seed,yield and yield components of summer soybean under drip irrigation were studied. Treatments were established following one factor and randomized block de-sign. The result showed that the number of pods, seedless pods and seeds per plant declined with the increasing density. The effect of planting density on variations of the number of pods and seeds were significant in upper and lower layers, but not in middle layer. With the increasing of planting density, plant height and internode length increased, while the grain density and stem diameter decreased. The difference in grain density was up to 63.16% due to plant density. The yield showed a downward parabola against planting density. It found that 5.25 × 10^5 plants per hectare had the highest yield of 3 205.04 kg·ha^-1, which reached a very significant difference（P 〈 0.01 ）compared to the other treatments.

关 键 词：滴灌 复播大豆 密度 荚粒分布 产量 

分 类 号：S565.1[农业科学—作物学]