| 种植密度对匀播冬小麦籽粒灌浆及产量的影响 |
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| 引用本文： | 陈猛,梁雪齐,李玲,张丽,陈国栋,吴全忠,翟云龙.种植密度对匀播冬小麦籽粒灌浆及产量的影响[J].新疆农业科学,2022,59(6):1338-1346. |
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| 作者姓名： | 陈猛 梁雪齐 李玲 张丽 陈国栋 吴全忠 翟云龙 |
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| 作者单位： | 塔里木大学农学院,新疆阿拉尔 843300 |
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| 基金项目： | 新疆生产建设兵团南疆重点产业支撑计划(2017DB010) |
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| 摘 要： | 【目的】 分析种植密度与匀播种植冬小麦籽粒灌浆和产量之间的关系,研究匀播条件下不同穗型冬小麦品种适宜种植密度。【方法】 以不同穗型品种新冬22号和新冬50号为材料,匀播(株距行距相等)条件下设置123×104、156×104、204×104、278×104和400×104株/hm2等5个种植密度,用Logistic方程模拟籽粒灌浆过程,分析冬小麦籽粒灌浆相关参数。【结果】 匀播条件下不同穗型品种Logistic方程拟合决定系数均在0.996以上,能准确反映灌浆过程;不同穗型品种灌浆期千粒重、最大灌浆速率、平均灌浆速率、阶段籽粒产量、阶段灌浆速率均随着种植密度的增加、株行距缩小呈下降趋势;小麦千粒重与最大灌浆速率、平均灌浆速率呈正相关;阶段籽粒产量与阶段灌浆速率呈正相关,与阶段灌浆持续时间关系不大。【结论】 匀播条件下,多穗型品种新冬22号适宜种植密度为156×104株/hm2,大穗型品种新冬50号适宜种植密度为278×104株/hm2。
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| 关 键 词： | 冬小麦 种植密度 匀播 灌浆特性 产量 |
| 收稿时间： | 2021-10-13 |
Effects of Planting Densities on Grain Filling and Grain Yield of Uniformly Sown Winter Wheat |
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| CHEN Meng,LIANG Xueqi,LI Ling,ZHANG Li,CHEN Guodong,WU Quanzhong,ZHAI Yunlong.Effects of Planting Densities on Grain Filling and Grain Yield of Uniformly Sown Winter Wheat[J].Xinjiang Agricultural Sciences,2022,59(6):1338-1346. |
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| Authors: | CHEN Meng LIANG Xueqi LI Ling ZHANG Li CHEN Guodong WU Quanzhong ZHAI Yunlong |
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| Institution: | College of Agricultare Science, Tarim University, Alar Xinjiang 843300, China |
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| Abstract: | 【Objective】 In order to explore the effects of planting density on the grain filling characteristics and yield of evenly planted winter wheat. 【Method】 Two different panicle type varieties of multi-panicle type Xindong 22 (A1) and large-panicle type Xindong 50 (A2) were taken as materials, with the planting densities of 123×104, 156×104, 204×104, 278×104, 400×104 plant/hm2, Logistic equation was fitted to simulate the grain filling process, and the wheat grain filling parameters were analyzed.【Result】 The results showed that the fitting decision coefficients of different panicles were all above 0.996 which could accurately reflect the filling process. With the increase of planting density and the reducing of plant spacing, the grain yield and the grain filling rate of different panicle varieties at the filling stage showed a decreasing trend. The 1,000 grains weight of wheat was positively correlated with the maximum and average filling rate. The grain yield was positively correlated with the grain filling, whereas, it was not significantly correlated with the duration of grain filling. 【Conclusion】 Under the condition of uniform sowing, the suitable planting density of multi-panicle type Xindong 22 is 156×104 plants per ha, and that of large-panicle type Xindong 50 is 278×104 plants per ha. |
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| Keywords: | winter wheat planting density uniform sowing grain filling characteristics yield |
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