干旱区生态环境知识资源中心(Arid): 豆禾牧草间作根际土壤养分、酶活性及微生物群落特征

Arid

	豆禾牧草间作根际土壤养分、酶活性及微生物群落特征
其他题名	Rhizosphere soil nutrients,enzyme activities and microbial community characteristics in legume-cereal intercropping system in Northwest China
	赵雅姣; 刘晓静; 吴勇; 童长春
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2020
卷号	40 期号:3 页码:219-228
中文摘要	西北半干旱地区生态系统脆弱,土地养分流失严重,而过量施肥和连作会导致土壤性状恶化。为了满足当地饲草需求及改善土壤状况,本研究对紫花苜蓿和玉米进行连续间作,研究其对根际土壤养分、生物活性及稳定性的影响。结果表明:根际土壤pH在间作下较单作大幅降低。间作根际土壤有机质、有效磷和速效钾含量均显著大于玉米单作,根际土壤碱性磷酸酶活性显著大于紫花苜蓿单作,而过氧化氢酶活性则表现相反。间作土壤脲酶、碱性磷酸酶、过氧化氢酶和蔗糖酶活性显著大于玉米单作。细菌/真菌数量在间作根际土壤中显著大于单作。间作根际土壤细菌、放线菌数量及细菌序列数显著大于玉米单作,拟杆菌门和疣微菌门相对丰度显著大于紫花苜蓿单作,土壤绿弯菌门和放线菌门相对丰度显著大于玉米单作。土壤酶活性和细菌数量均与pH呈极显著负相关,而与有机质、全氮、碱解氮含量极显著正相关;拟杆菌门与pH呈极显著负相关,与有机质、碱解氮及速效钾含量极显著正相关;酸杆菌门、疣微菌门与pH显著正相关,而与有机质、全氮、碱解氮及速效钾含量极显著负相关。紫花苜蓿/玉米间作可改善根际土壤碱性条件及微生物环境,同时改善玉米根际土壤养分。紫花苜蓿/玉米间作是防止西北半干旱区土壤退化、改善土壤稳定性的有效措施。
英文摘要	The semi-arid area of Northwest China is characterized by fragile ecosystem and serious nutrient loss of soil. Excessive fertilization and continuous cropping will lead to soil degradation. In order to meet the needs of forage and improve the soil conditions in local area,the effects of rhizosphere soil nutrient,biological activity and stability were studied in the continuous alfalfa/maize intercropping. The results showed that pH of rhizosphere soil decreased greatly in intercropping than that in monoculture. The contents of soil organic matter (SOM), available phosphorus (AP) and available kalium (AK) in rhizosphere soil of intercropping maize were significantly higher than that of monoculture maize. Alkaline phosphatase activity of intercropping alfalfa was significantly higher than that of monoculture alfalfa,while catalase activity was the opposite in the rhizosphere soil. The activities of urease, alkaline phosphatase,catalase and invertase in maize intercropping were significantly higher than that in monoculture maize. Bacteria/fungi value in intercropping maize was significantly higher than that in monoculture maize. Quantity of bacteria and actinomycetes and sequence reads of bacteria in maize intercropping was significantly higher than that in monoculture maize. Bacteroides and Verruciformes in intercropping alfalfa were significantly higher than those in monoculture alfalfa,while Campylobacter and Actinomycetes in intercropping maize were significantly higher than those in monoculture maize. Soil enzymes and bacteria quantity were extremely significant negative correlated with pH,but extremely significant positive correlated with SOM,total nitrogen (TN) and available nitrogen (AN). Bacteroides was extremely significant negative correlated with pH and extremely significant positive correlated with SOM,AN and AP. Acidobacteria and Verruciforme were extremely significant positive correlated with pH,but extremely significant negative correlated with SOM,NA and AK. In conclusion,alfalfa/maize intercropping can reduce the alkaline condition and microbial environment of rhizosphere soil,and improve the nutrient of maize rhizosphere soil. Therefore,alfalfa/maize intercropping is an effective measure to prevent soil degradation and improve soil stability in the semi-arid area of Northwest China.
中文关键词	间作 ; 土壤养分 ; 土壤酶 ; 细菌群落
英文关键词	intercropping soil nutrients soil enzymes bacterial community
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture
CSCD记录号	CSCD:6746196
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336604
作者单位	赵雅姣, 甘肃农业大学草业学院/中-美草地畜牧业可持续发展研究中心, 草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续发展研究中心, 兰州, 甘肃 730070, 中国.; 刘晓静, 甘肃农业大学草业学院/中-美草地畜牧业可持续发展研究中心, 草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续发展研究中心, 兰州, 甘肃 730070, 中国.; 吴勇, 甘肃农业大学草业学院/中-美草地畜牧业可持续发展研究中心, 草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续发展研究中心, 兰州, 甘肃 730070, 中国.; 童长春, 甘肃农业大学草业学院/中-美草地畜牧业可持续发展研究中心, 草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续发展研究中心, 兰州, 甘肃 730070, 中国.
推荐引用方式 GB/T 7714	赵雅姣,刘晓静,吴勇,等. 豆禾牧草间作根际土壤养分、酶活性及微生物群落特征[J]. 甘肃农业大学,2020,40(3):219-228.
APA	赵雅姣,刘晓静,吴勇,&童长春.(2020).豆禾牧草间作根际土壤养分、酶活性及微生物群落特征.中国沙漠,40(3),219-228.
MLA	赵雅姣,et al."豆禾牧草间作根际土壤养分、酶活性及微生物群落特征".中国沙漠 40.3(2020):219-228.