| 不同种植模式对甘肃中部高寒区胡麻田土壤酶活性及土壤养分的影响 |
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| 引用本文： | 罗影,王立光,陈军,叶春雷,张仁陟,罗俊杰.不同种植模式对甘肃中部高寒区胡麻田土壤酶活性及土壤养分的影响[J].核农学报,2017,31(6). |
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| 作者姓名： | 罗影 王立光 陈军 叶春雷 张仁陟 罗俊杰 |
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| 作者单位： | 1. 甘肃农业大学资源环境学院,甘肃兰州,730070;2. 甘肃省农业科学院生物技术研究所,甘肃兰州,730070;3. 甘肃农业大学资源环境学院,甘肃兰州730070;甘肃省农业科学院生物技术研究所,甘肃兰州730070 |
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| 基金项目： | 国家胡麻产业技术体系，甘肃省农业科学院科技创新工程学科团队 |
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| 摘 要： | 为了探究土壤酶活性和土壤养分平衡的作用对胡麻连作障碍的影响,以胡麻为主要试验材料,设置胡麻-小麦轮作(TR)、胡麻连作(TC)、胡麻/小麦间作(TI)、撂荒(TU)等4个处理,采用定位试验的方法,研究不同种植模式下土壤酶活性及其变化,以及土壤养分平衡状况。结果表明,TC显著降低0~20 cm耕层土壤过氧化氢酶、脲酶、碱性磷酸酶和蔗糖酶活性,整个生育期TC分别比TR降低8.73%、4.17%、1.22%和4.44%。在空间分布上,4种土壤酶活性随着土层加深均显著下降,40 cm和60 cm土层处理间差异不显著。土壤养分与酶活性的相关分析表明,连作对土壤养分与酶活性呈现显著的负相关,轮作与土壤养分及酶活性呈显著的正相关关系。轮作、间作等种植模式可在不同程度上缓解、消除连作障碍的影响。本研究结果为缓解和消除胡麻连作障碍提供理论依据和实践探索。
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| 关 键 词： | 胡麻 种植模式 连作 土壤酶活性 |
Effects of Different Flex Cropping Modes on Soil Enzyme Activities and Soil Nutrients in the Cold Area of Middle Part of Gansu |
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| LUO Ying,WANG Liguang,CHEN Jun,YE Chunlei,ZHANG Renzhi,LUO Junjie.Effects of Different Flex Cropping Modes on Soil Enzyme Activities and Soil Nutrients in the Cold Area of Middle Part of Gansu[J].Acta Agriculturae Nucleatae Sinica,2017,31(6). |
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| Authors: | LUO Ying WANG Liguang CHEN Jun YE Chunlei ZHANG Renzhi LUO Junjie |
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| Abstract: | In order to explore the critical effects of the function of soil enzyme activity and the balance of soil nutrient on continuous cropping obstacles,flax was used as the main experimental material,and the method of located experiment was adopted.Four treatments was designed as flax-wheat rotation (TR),continuous cropping of flax (TC),flax/ wheat intercropping (TI),and uncultivated (TU).The results showed that,at the layer of 0 to 20cm in the soil,TC model obviously decreased the activities of catalase,urease,alkaline phosphatase and sucrase,which is 8.73％,4.17％,1.22％ and 4.44％ lower than TR model,respectively,in the whole growth period.As for the spatial distribution,the four kinds of enzyme activities sharply descended with the increasing of soil depth.However,no significant distinction was found in soil enzyme activity at the layers of 40cm and 60cm.Correlation analysis of soil nutrients and soil enzyme activities indicated that TC model had a significant negative correlation to soil enzyme activity and the balance of soil nutrient,while TR model showed an obvious positive correlation.In a conclusion,TR and TI model could establish a theoretical base and practical experience for reducing and eliminating continuous cropping obstacles. |
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| Keywords: | flax cropping mode continuous cropping soil enzyme activities |
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