PENG Jiang-long,ZHANG Yong-qiang,TANG Jiang-hua,et al.Effect of Plant-Row Spacing on Photosynthetic Characteristics and Yield of Summer Soybean[J].Soybean Science,2015,34(05):794-800.[doi:10.11861/j.issn.1000-9841.2015.05.0794]
株行距配置对夏大豆光合特性及产量的影响
- Title:
- Effect of Plant-Row Spacing on Photosynthetic Characteristics and Yield of Summer Soybean
- 文献标志码:
- A
- 摘要:
- 在5.5×105株?hm-2种植密度下,共设计5种株行距配置,即行距×株距分别为:30 cm×6 cm(A)、(15+30)cm×8 cm(B)、60 cm×3 cm(C)、(15+15+60)cm×6 cm(D)、40 cm×4.5 cm(E),研究不同株行距配置对夏大豆光合特性和产量的影响,为北疆麦后复播大豆高产,筛选出合理的株行距配置提供理论依据。结果表明:等行距模式夏大豆的叶绿素含量(SPAD值)、叶面积指数(LAI)、光合速率(Pn)等指标均随着行距的增大株距的减小而减小,即表现为A处理> E处理>C处理,其中A处理SPAD值、LAI、Pn测定期平均值分别比C处理的高8.89%、19.20%、2.72%;同株距条件下,D处理的SPAD值、LAI、Pn测定期平均值分别比A处理高2.72%、18.73%、7.09%。株距最宽的宽窄行B处理测定期SPAD值、LAI、Pn的平均值均比D处理的要高,而且各处理中B处理的产量最高为1 628.94 kg.hm-2,较A、C、D、E处理分别增加43.62%、75.69%、25.03%、51.21%,且均达极显著差异水平(P<0.01)。说明适当缩行增株构建的株行距配置是提高夏大豆产量的重要措施之一。
- Abstract:
- The aim of this experiment was to find out the appropriate spacing configuration and provide a theoretical basis with high yield cultivation measures for summer soybean(Heihe 43) under the population of 5.5×105 plants?ha-1. Five arrangements were established in summer soybean field as plant spacing×row spacing: 30 cm×6 cm (A),(15+30) cm×8 cm(B), 60 cm×3 cm(C), (15+15+60) cm×6 cm(D) and 40 cm×4.5 cm(E) to study the effect of photosynthetic characteristics and yield on summer soybean in northern Xinjiang. The results showed thatwith the increasing of plant spacing and decreasing of row spacing under equal spacing model,the chlorophyll content(SPAD), leaf area index(LAI) and photosynthetic rate(Pn) decreased, which was A>E>C, and the cumulative average of A were 8.89%,19.20% and 2.72% higher than C on SPAD, LAI and Pn respectively, but TD were 2.72%,18.73%,7.09% higher than A under the condition of same planting spacing on SPAD, LAI and Pn respectively. Yield of B(1 628.94 kg.hm-2) with the maximum spacing was 43.62%, 75.69%, 25.03% and 51.21% higher than A, C, D and E, respectively. The difference in yield between treatments were very significant(P<0.01), which indicated that decreasing the plant spacing and increasing row planting appropriately was one of the important measures to improve the summer soybean yield.
参考文献/References:
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备注/Memo
基金项目:农业部公益性行业专项(201103001);自治区特派员项目;新疆农业大学产学研联合培养研究生项目(xjaucxy-yis-20131013)。