| 种植密度与分蘖交互作用对饲用型甜高粱产量的影响 |
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| 引用本文： | 孙学保,石晓瑛.种植密度与分蘖交互作用对饲用型甜高粱产量的影响[J].中国糖料,2020(1):33-37. |
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| 作者姓名： | 孙学保 石晓瑛 |
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| 作者单位： | 甘肃省武威市农业技术推广中心;甘肃省平凉市农业科学院 |
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| 摘 要： | 为了明确饲用型甜高粱在甘肃河西绿洲灌区适宜种植密度、是否间苗、是否保留分蘖以获得最高产量,通过双因素裂区试验主区双向区组的设计与分析,研究水分利用效率、植株外部形态及产量。结果表明:在正常穴播量1~2粒情况下,留单苗保留分蘖、留单苗掰除分蘖、不间苗保留分蘖处理,不同密度之间均表现为随着密度的增大,产量呈增加趋势,当密度达13.5万穴/hm^2~15万穴/hm^2时产量最高(139.6 t/hm^2);在相同密度条件下,几乎所有不间苗保留分蘖处理较间苗掰除分蘖处理和间苗保留分蘖处理增加产量,尤其不间苗保留分蘖处理在密度13.5万穴/hm^2~15万穴/hm^2时,降水和灌水利用效率最高,含糖量较高,单株总茎数增加;高密度、不间苗、保留分蘖同时还减少了间苗定苗和掰除分蘖造成的工时及资源浪费。
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| 关 键 词： | 饲用型甜高粱 种植密度 分蘖 间苗 产量 |
Interaction of Different Density and Tillering on Yield of Forage Sweet Sorghum |
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| Sun Xuebao,Shi Xiaoying.Interaction of Different Density and Tillering on Yield of Forage Sweet Sorghum[J].Sugar Crops of China,2020(1):33-37. |
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| Authors: | Sun Xuebao Shi Xiaoying |
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| Institution: | (Gansu Wuwei Agriculture Technology and Popularization Center,Wuwei,Gansu 733000;Pingliang Academy of Agricultural Sciences,Gansu 744000) |
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| Abstract: | In order to obtain optimal yield under the interaction of planting density,thinning seedling and tillering retention of forage sweet sorghum in Hexi oasis irrigation area,Gansu Province,the water use efficiency,plant external morphology and yield were studied through the design and analysis of two-way block in the main area of two-factor split plot test.The results showed that under the condition of normal hole sowing quantity of 1-2 seeds,the yield increased with the increase of density under the treatment of remaining 1 seedling with retained tillering,remaining 1 seedling without retained tillering and non thinning with retained tillering.The highest yield was 139.6 t/hm^2 when the density reached 135000-150000 hole/hm^2.Under the same density,almost all non thinning with retained tillerin treatments increased the yield compared with remaining 1 seedling with retained tillering and remaining 1 seedling without retained tillering,especially non thinning with retained tillering treatment when the density was 135000-150000 hole/hm^2,the water use efficiency of rainfall or irrigation was the highest,the sugar content was higher,and the total stem number per plant was the highest.Moreover,High density,non thinning with retained tillerin also reduced the waste of working hours and resources caused by thinning seedlings and tiller removal. |
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| Keywords: | forage sweet sorghum planting density tiller thinning seedling yield |
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