| 氮肥及多效唑对蓝茎冰草生长及种子产量的影响 |
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| 引用本文： | 李世忠,韩建国. 氮肥及多效唑对蓝茎冰草生长及种子产量的影响[J]. 农业科学研究, 2010, 31(1): 19-22 |
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| 作者姓名： | 李世忠 韩建国 |
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| 作者单位： | 1. 宁夏农业勘查设计院,宁夏,银川,750002
2. 中国农业大学,草地研究所,北京,100094 |
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| 基金项目： | 国家“948”重大项目(202009)专题“牧草种子生产的研究与示范” |
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| 摘 要： | 在甘肃省酒泉地区研究氮肥和多效唑(PP333)对蓝茎冰草种子产量及其构成要素的影响.结果表明,施氮量达到90 kg/hm2时,种子产量便开始下降,而喷施多效唑后,有效提高了单位面积的生殖枝数和每个小穗上的小花数以及每个小穗上的种子数,最终影响了蓝茎冰草的种子产量.灌施多效唑对种子产量的效应不及喷施多效唑效果好,两者之间差异显著.
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| 关 键 词： | 蓝茎冰草 种子产量 施肥 多效唑 |
Effects of N fertilization and PP333 on the growth and seed yield of Agropyron smithii |
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| Li Shizhong,Han Jianguo. Effects of N fertilization and PP333 on the growth and seed yield of Agropyron smithii[J]. Journal of Agricultural Sciences, 2010, 31(1): 19-22 |
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| Authors: | Li Shizhong Han Jianguo |
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| Affiliation: | 1.Ningxia Institute of Agricultural Survey and Design/a>;Yinchuan 750002/a>;China/a>;2.Institute of Grassland Science/a>;China Agricultural University/a>;Beijing 100094/a>;China |
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| Abstract: | The effects of seed yield and yield components of Agropyron smithii to different rates and method of nitrogen application and PP333 were researched in Jiuquan of Gansu Province.The results indicated that seed yield decreased when fertilizing amount was over N 90 kg/hm2 and after applying PP333 on the leaves of Agropyron smithii increased reproduction branches/m2,florets/spikelet,seeds/spikelet and seed yield.Applying PP333 on the leaves of Agropyron smithii was better than irrigating PP333 and there were si... |
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| Keywords: | Agropyron smithii seed yield fertilization PP333 |
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