干旱区生态环境知识资源中心(Arid): 早播及耕作措施对黄土高原半干旱区春小麦土壤氮磷元素的影响

Arid

	早播及耕作措施对黄土高原半干旱区春小麦土壤氮磷元素的影响
其他题名	Effects of early sowing and tillage measures on nitrogen and phosphorus in the soil supporting spring wheat in the semi-arid area of the Loess Plateau
	刘帅楠; 李广; 宋良翠; 袁建钰; 谢明君; 魏星星
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2021
卷号	38 期号:5 页码:1367-1375
中文摘要	为探讨早播及耕作措施对农田生态系统土壤氮磷元素影响规律,对黄土高原半干旱区早播、正常播下不同耕作措施[传统耕作(T)、传统耕作+秸秆还田(TS)、免耕(NT)、免耕+秸秆覆盖(NTS)]春小麦(Triticum aestivum)生育期0~40 cm土壤进行分析,以正常播种传统耕作春小麦为对照,研究早播及耕作措施对春小麦土壤氮磷元素的影响。结果表明:(1)不同处理下春小麦土壤N素(TN、NO_3~- -N、NH_4~+ -N)、P素(TP)含量均具有表聚性特征,其土壤N∶P均值(1.713)低于全国平均值(5.2),同时其变异水平系数处于26.99%~77.28%,属中等变异水平;(2)全生育期0~40 cm土层,早播春小麦土壤TN、NH_4~+ -N含量及N∶P均值显著低于正常播23.1%~32.5%,不利于土壤TN、NH_4~+ - N含量积累,而NO_3~--N含量及NO_3~--N∶N均值显著高于正常播30.5%、41.5%,有助于土壤NO_3~--N含量的固存,同时早播处理下土壤TP含量整体高于正常播处理;(3)秸秆覆盖措施(NTS、TS)下土壤TN、TP含量高于NT、T,但速效氮(NO_3~--N、NH_4~+ -N)养分含量表现相反;(4)不同处理下春小麦土壤TP含量在生育期间趋于稳定,而N素含量在分蘖期及开花期变化较显著。因此,选择适宜播种时间及耕作管理措施有助于提高该区作物土壤N、P元素的积累转化效率,加快发展黄土高原半干旱区农田生态系统恢复进程。
英文摘要	To study the effects of early sowing and tillage measures on soil nitrogen and phosphorus in a farmland ecosystem, 0-40 cm of soil supporting spring wheat (Triticum aestivum) in the semi-arid region of the Loess Plateau was collected and analyzed. Under early sowing and normal sowing conditions, the different tillage measures were as follows: traditional tillage (T), traditional tillage + straw returning (TS), no tillage (NT), and no tillage + straw mulching (NTS). Results were as follows. (1) Under different treatments, the contents of N (TN, NO_3~- -N, and NH_4~+ -N) and P (TP) in spring wheat-related soil had the characteristics of surface aggregation. The average value of soil N:P (1.713) was lower than the national average value (5.2) and the coefficient of variation was 26.99%-77.28%, which belonged to the medium variation level. (2) In the 0-40 cm soil layer, the TN, NH_4~+- N, and N: P levels of early sowing spring wheat were significantly lower than the levels found with normal sowing (i.e., by 23.1%-32.5%), which was not conducive to the accumulation of TN and NH_4~+-N, whereas NO_3~--N and NO_3~--N:N levels were significantly higher in early sowing spring wheat than the levels achieved with normal sowing (i.e., by 30.5% and 41.5%, respectively), which was conducive to the retention of NO_3~- -N in the soil. (3) The contents of TN and TP under straw mulching conditions (NTS and TS) were higher than those under NT and T, but the contents of available nitrogen (NO_3~- -N and NH_4~+ -N) showed the opposite trend. (4) Under different treatments, the contents of TP in the soil tended to be stable during the growth period, whereas the contents of N changed significantly at the tillering and flowering stages. Therefore, selecting suitable sowing times and tillage management measures will help to improve the accumulation and transformation efficiency of N and P elements in crop soil and will accelerate the restoration process of farmland ecosystems in the semi-arid area of the Loess Plateau.
中文关键词	黄土高原半干旱区 ; 早播 ; 耕作措施 ; 春小麦 ; 土壤氮磷
英文关键词	semiarid region of Loess Plateau early sowing tillage measures spring wheat soil nitrogen and phosphorus
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:7049015
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377668
作者单位	刘帅楠, 甘肃农业大学林学院, 兰州, 甘肃 730070, 中国.; 李广, 甘肃农业大学林学院, 兰州, 甘肃 730070, 中国.; 宋良翠, 甘肃农业大学林学院, 兰州, 甘肃 730070, 中国.; 袁建钰, 甘肃农业大学林学院, 兰州, 甘肃 730070, 中国.; 谢明君, 甘肃农业大学林学院, 兰州, 甘肃 730070, 中国.; 魏星星, 甘肃农业大学林学院, 兰州, 甘肃 730070, 中国.
推荐引用方式 GB/T 7714	刘帅楠,李广,宋良翠,等. 早播及耕作措施对黄土高原半干旱区春小麦土壤氮磷元素的影响[J],2021,38(5):1367-1375.
APA	刘帅楠,李广,宋良翠,袁建钰,谢明君,&魏星星.(2021).早播及耕作措施对黄土高原半干旱区春小麦土壤氮磷元素的影响.干旱区研究,38(5),1367-1375.
MLA	刘帅楠,et al."早播及耕作措施对黄土高原半干旱区春小麦土壤氮磷元素的影响".干旱区研究 38.5(2021):1367-1375.