干旱区生态环境知识资源中心(Arid): 旱地不同栽培模式及施氮量对小麦根区土壤微生物区系的影响

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	旱地不同栽培模式及施氮量对小麦根区土壤微生物区系的影响
其他题名	Effects of Different Cultural Conditions and Nitrogen in Dryland on the Wheat Rhizosphere Soil Microorganism Quantity
	林雁冰; 薛泉宏; 刘海斌; 陈德育
来源期刊	西北农业学报
ISSN	1004-1389
出版年	2005
卷号	14 期号:2 页码:38-43
中文摘要	采用常规方法研究了西北干旱半干旱地区5种栽培措施及3种施氮量水平对小麦根区根外土壤细菌、真菌及放线菌数量的影响.结果表明:①覆膜条件下小麦根区、根外细菌在3种施氮水平下的平均数量高于常规条件(即10.7106个/g·土覆膜根区＞7.0106个/g·土常规根区和7.5106个/g·土覆膜根外＞6.1106个/g·土常规根外),而且覆膜和常规2种栽培模式下根区细菌的平均数量均高于根外细菌的平均数量.②5种栽培模式下根区真菌数量(103个/g·土)按覆膜(4.0)＞常规(3.0)＞覆草(1.0)＞补灌、垄沟(0.6)排列,而根外真菌数量差异不显著;只有覆膜时表现为根区真菌数量高于根外(4.0103个/g·土＞3.1103个/g·土),其余4种栽培模式均为根外真菌数量高于根区.⑧覆膜、覆草、补灌和垄沟4种模式下根区放线菌在3种施氮水平下的平均数量均高于常规条件(31.1105～33.2105个/g·土＞20.7105个/g·土),而根外放线菌数量差异不显著;常规条件根区放线菌数量低于根外,其余4种模式均为根区高于根外放线菌数量.④小麦根外细菌、真菌及放线菌数量随施氮量的增加有减少的趋势;而根区真菌和放线菌在N16时数量最高(分别为2.1103和32.8105个/g·土),根区细菌则在N8时较N0和N16的数量高,即随施氮量的增加,根区微生物数量有增加的趋势.
英文摘要	In the paper, the effect of the soil bacteria, fungi and actinomycete quantity at the wheat rhizosphere and outrhizosphere under 5 different cultural conditions and 3 lever of nitrogen fertilizer in the arid and semiarid area in northwest were studied by normal methods. The results indicated that: ?The bacteria average amount of wheat rhizosphere and outrhizosphere under 3 nitrogen lever was more than the amount of routine cultural condition (that is: 10. 7X106/g_(Covered filmof rhizosphere) >7.010~6/g_(Normal way of rhizosphere) and 7.510~6 g_(Covered film of outrhizosphere >6.1*10~6 /g_(Normal way of outrhizosphere), and the average amount of bacteria at rhizosphere was more than the average amount at outrhizosphere under the covered film and normal way, The sequence of the fungi amount (X 10~3/g) at rhizosphere under 5 different cultural conditions was covered film(4. 0)>normal way (3. 0)>covered grass (1. 0) >winter irrigate and furrow(0. 6). ?The actinomycete average amount of wheat rhizosphere under 3 nitrogen lever under covered film, covered grass, winter irrigate and furrow was more than normal way (31. 1 - 33. 2 X 10~5>20. 7 X 10~5/g), while the difference of actinomycete amount under the 4 cultural conditions was not notable; the actinomycete amount at rhizosphere was less than the amount at outrhizosphere, under the other 4 cultural conditions the amount of actinomycete at rhizosphere was more than that of outrhizosphere. ? The amount of bacteria , fungi and actinomyceteat wheat outrhizosphere was declining with the increase of nitrogen; while the amount of fungi and actinomycete was the most at Nl6(that is : 2. 1X10~3and 32. 8X10~5/g). the amount of bacteria at N8 was more than at NO and N16, that is the amount of microorganism at rhizosphere was increasing with the decline of nitrogen.
中文关键词	栽培模式 ; 施氮量 ; 微生物区系 ; 地膜覆盖 ; 放线菌
英文关键词	Cultural condition Nitrogen Microorganism composing and amount Covered film Actinomycete
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture
CSCD记录号	CSCD:1924325
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/206766
作者单位	林雁冰, 西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国.; 薛泉宏, 西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国.; 刘海斌, 西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国.; 陈德育, 西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国.
推荐引用方式 GB/T 7714	林雁冰,薛泉宏,刘海斌,等. 旱地不同栽培模式及施氮量对小麦根区土壤微生物区系的影响[J]. 西北农林科技大学,2005,14(2):38-43.
APA	林雁冰,薛泉宏,刘海斌,&陈德育.(2005).旱地不同栽培模式及施氮量对小麦根区土壤微生物区系的影响.西北农业学报,14(2),38-43.
MLA	林雁冰,et al."旱地不同栽培模式及施氮量对小麦根区土壤微生物区系的影响".西北农业学报 14.2(2005):38-43.