| Effect of planting patterns on photosynthetic capacity and grain filling characteristics of summer soybean at seed-filling stage |
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| DOI：10.7606/j.issn.1000-7601.2018.03.15 |
| Key Words: planting pattern summer soybean wide-narrow row spacing photosynthetic characteristics grain filling characteristics |
| Author Name | Affiliation | | CHEN Chuan-xin | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | TANG Jiang-hua | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | CHEN Jia-jun | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | WANG Na | Center of Spreading Agriculture Techniques of Yining County, Yili, Xinjiang 835100, China | | FU Xiao-wen | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | DU Xiao-jing | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | XU Wen-xiu | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China |
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| Abstract: |
| Using summer soybean Heihe 45, a field experiment was conducted to study the effects of planting patterns on photosynthetic capacity and grain filling characteristics of summer soybean at seed-filling stage with plant population density of 5.5×105 plant·hm-2 of equal row spacing treatment in five planting patterns: 30 cm(A)、40 cm(B)、60 cm(C) and wide-narrow row treatment of “15 cm+30 cm”(D) and “15 cm+15 cm+60 cm”(E). The results suggested that transpiration rate (Tr)、stomatal conductance (Gs)、net photosynthetic rate (Pn)、leaf area index (LAI)、leaf area duration (LAD) of wide-narrow row spacing treatments were higher than those of equal row spacing treatments increased by 16.92%~72.22%,12.50%~69.23%,7.73%~34.80%,1.13%~33.88%,5.87%~47.70%. The average of grain phase accumulation、seed filling rate and seed filling duration of wide-narrow row spacing treatments were also higher than that of equal row spacing treatments. The yield of wide-narrow row spacing treatments were higher than that of equal row spacing treatments, the average yield of wide-narrow row spacing treatments was 24.51% higher than that of equal row spacing treatments. Therefore, the planting pattern of wide-narrow row spacing is one of the best cultivation patterns to improve yield increased for summer soybean. |
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