| 不同施氮水平对西藏饲用黑麦种籽产量性状和土壤养分的影响 |
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| 引用本文： | 张光雨,沈振西,钟志明,崔建钊,扎西顿珠.不同施氮水平对西藏饲用黑麦种籽产量性状和土壤养分的影响[J].中国农学通报,2021,37(18):19-24. |
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| 作者姓名： | 张光雨 沈振西 钟志明 崔建钊 扎西顿珠 |
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| 作者单位： | 1.中国科学院地理科学与资源研究所,生态系统网络观测与模拟重点实验室,拉萨高原生态系统研究站,北京 100101;2.西藏高原草业工程技术研究中心,拉萨 850000;3.中国科学院大学,北京 100049;4.日喀则市科学技术局高新技术产业发展中心,西藏日喀则 857000;5.西藏自治区拉萨市达孜区农业农村局,拉萨 850000 |
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| 基金项目： | 拉萨市科技局重点项目“面向乡村振兴的产业融合科技示范基地”(SCKJ004);拉萨市科技局重点项目“达孜粮改饲草业发展模式研究与示范”(LSKJ2018006);西藏科技厅中央引导地方资金专项“拉洛灌区粮草畜一体化关键技术研究与示范”(YDZX20195400004489);国家重点研发计划课题“藏南农牧交错带生态草牧业发展技术研究与示范”(2016YFC0502005);西藏饲草产业专项“牧草种质改良与利用重大专项”(XZ201901NA03) |
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| 摘 要： | 在西藏河谷地区研究不同施氮水平对‘冬牧70’饲用黑麦种籽产量性状的影响,确定该地区‘冬牧70’饲用黑麦种籽生产的合理施肥量,可为该区合理施肥提供参考依据。本研究以‘冬牧70’为试验材料,对比分析了2018—2019年不同施氮水平的‘冬牧70’种籽产量性状等相关指标。结果表明通过施肥显著增加了土壤有机质和氮磷含量;当施氮225.0 kg/hm2时籽粒增重最大,氮素利用效率也较高。因此,需要施较高的氮肥水平才能使得‘冬牧70’达到较高的籽粒产量;在西藏河谷地区提高施氮量可以适当提高‘冬牧70’的穗数、穗粒数和籽粒产量和土壤有机质和氮磷含量。
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| 关 键 词： | 西藏河谷地区 不同施氮水平 冬牧70 产量性状 土壤养分含量 |
| 收稿时间： | 2020-07-24 |
Different Nitrogen Fertilizer Levels: Effects on the Grain Yield Trait and Soil Nutrient of Forage Rye in Tibet |
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| Zhang Guangyu,Shen Zhenxi,Zhong Zhiming,Cui Jianzhao,Zhaxi Dunzhu.Different Nitrogen Fertilizer Levels: Effects on the Grain Yield Trait and Soil Nutrient of Forage Rye in Tibet[J].Chinese Agricultural Science Bulletin,2021,37(18):19-24. |
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| Authors: | Zhang Guangyu Shen Zhenxi Zhong Zhiming Cui Jianzhao Zhaxi Dunzhu |
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| Abstract: | The aims are to investigate the effects of different nitrogen fertilizer levels on seed yield of ‘Dongmu 70’, determine the reasonable fertilizer addition rate for seed production of ‘Dongmu 70’ in the river valley of Tibet, and provide reference for rational fertilizer application in this area. In this study, ‘Dongmu 70’ was used as material, the seed yield and other related indexes were compared under different nitrogen fertilizer levels in 2018-2019. The results showed that nitrogen addition significantly increased soil organic matter, nitrogen and phosphorus. The increase of grain yield was the highest and the nitrogen use efficiency was also relatively high when nitrogen fertilizer level was 225.0 kg/hm2. Therefore, higher nitrogen addition rate is needed to achieve higher grain yield of ‘Dongmu 70’. Increasing nitrogen addition level could increase the panicle number, grain number per panicle and grain yield of ‘Dongmu 70’ and soil organic matter, nitrogen and phosphorus content in the river valley of Tibet. |
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| Keywords: | valley area of Tibet different nitrogen fertilizer levels ‘Dongmu 70’ yield traits soil nutrient content |
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