干旱区生态环境知识资源中心(Arid): 半干旱地区春小麦氮肥后效的研究

Arid

	半干旱地区春小麦氮肥后效的研究
其他题名	Study on the residual effect of nitrogen fertilizer in spring wheat cultivation in semiarid areas
	许爱霞; 黄高宝; 李玲玲; 谢奎忠; 赵君范; 高慧; 郑甲成
来源期刊	甘肃农业大学学报
ISSN	1003-4315
出版年	2008
卷号	43 期号:2 页码:105-109
中文摘要	连续4年春小麦氮肥后效的大田试验结果表明：在连续2年（2003-2004年）施用纯氮52.5、105、157.5、210 kg/hm~2后再连续2年（2005-2006年）停施氮肥,前2年未被利用的氮素可使后2年籽粒平均增产25.4%;干物质在五叶期及以后时期与对照相比均有明显增加;植株吸氮量在后续第1年（2005年）各处理平均增加22.4%,第2年（2006年）各处理平均增加14.0%;氮肥4年累计利用率比4年连续施用氮肥的处理提高了7.8%-12.9%.
英文摘要	A field experiment of spring wheat cultivation for 4 years was used to study the after-effects of nitrogen fertilizers. The resuhs showed that only a part of nitrogen fertilizers was taken up and used by the seasonal crop,while a large portion of it which was not taken up by crops left in the soil after harvesting. The residual nitrogen in the soil had evident effect on the following crops. However, the residual effects of nitrogen fertilizers on wheat yield would become not evident along with the prolonging of cultivation year, and moreover, the differentiation of the yield was related the annual precipitation pattern. In case of successively applying nitrogen fertilizers with the quota of 52.5 kg/hm~2 , 105 kg/hm~2 , 157. 5 kg/hm~2 and 210 kg/hm~2 at the first two years （2003-2004） and then stopping nitrogen fertilization at the following two years （2005-2006）,the unused nitrogen had produced a significant after-effects on the yields in the following two years and increased the yield by 25.4 % on average,increasing the dry matter by higher ratio in the five leave period and the following stages. The plant absorption quantity of nitrogen increased by 22.4 % and 14. 0 % respectively on average in 2005 and 2006. Compared with the treatments of successively applying nitrogen fertilizer for four years, the accumulated utilizing rate of nitrogen in four years increased 7.8 to 12.9 %.
中文关键词	半干旱区 ; 春小麦 ; 氮肥 ; 后效 ; 氮肥利用率
英文关键词	semiarid areas spring wheat nitrogen fertilizer residual effect nitrogen use efficient
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:3290783
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378580
作者单位	许爱霞, 甘肃农业大学农学院, 兰州, 甘肃 730070, 中国.; 黄高宝, 甘肃农业大学农学院, 兰州, 甘肃 730070, 中国.; 李玲玲, 甘肃农业大学农学院, 兰州, 甘肃 730070, 中国.; 谢奎忠, 甘肃农业大学农学院, 兰州, 甘肃 730070, 中国.; 高慧, 甘肃农业大学农学院, 兰州, 甘肃 730070, 中国.; 郑甲成, 甘肃农业大学农学院, 兰州, 甘肃 730070, 中国.; 赵君范, 甘肃农业大学资源环境学院, 兰州, 甘肃 730070, 中国.
推荐引用方式 GB/T 7714	许爱霞,黄高宝,李玲玲,等. 半干旱地区春小麦氮肥后效的研究[J],2008,43(2):105-109.
APA	许爱霞.,黄高宝.,李玲玲.,谢奎忠.,赵君范.,...&郑甲成.(2008).半干旱地区春小麦氮肥后效的研究.甘肃农业大学学报,43(2),105-109.
MLA	许爱霞,et al."半干旱地区春小麦氮肥后效的研究".甘肃农业大学学报 43.2(2008):105-109.