干旱区生态环境知识资源中心(Arid): 长期施肥条件下灰漠土磷的吸附与解吸特征

Arid

	长期施肥条件下灰漠土磷的吸附与解吸特征
其他题名	PHOSPHORUS ADSORPTION AND DESORPTION CHARACTERISTICS OF GRAY DESERT SOIL UNDER LONG-TERM FERTILIZATION
	王斌 1; 刘骅 2; 李耀辉 3; 马兴旺 2; 王西和 2; 马义兵 1
来源期刊	土壤学报
ISSN	0564-3929
出版年	2013
卷号	50 期号:4 页码:726-733
中文摘要	通过等温吸附与解吸试验，研究了长期施肥条件下不同水平的灰漠土耕层0~20 cm土壤磷素吸附与解吸特征。结果表明，在实验浓度范围内，不同Olsen-P水平的灰漠土土壤，随外源磷量的增加，磷的吸附量、解吸量及解吸率均逐渐增大，吸附率逐渐减小。土壤Olsen-P含量水平与土壤磷素吸附饱和度(DPS)的大小呈正相关关系。处理间比较，土壤最大吸附量(X_m)值为CK>NPKNPKM>PKNPKS、且处理间达到极显著差异水平；NPK处理的吸附常数(K)值与土壤最大缓冲容量(MBC)值均极显著地大于CK、PK、NPKM和NPKS处理。该4个处理间比较：K值无显著差异，MBC值CK极显著大于PK和NPKS处理、CK与NPKM、PK与NPKS处理间差异不显著。化肥配施有机肥或秸秆的处理土壤易解吸磷(RDP)值极显著大于单施化肥的处理，释磷效果以化肥有机肥配施为最优。
英文摘要	Phosphorus sorption and desorption characteristics of gray desert soil (0~20 cm) under long-term fertilization as affected by phosphorus content level were studied through an isothermal P adsorption and desorption experiment. Results show that within the range of P concentrations set for the experiment, in all the gray desert soil samples, regardless of Olsen-P level, P adsorption, P desorption and P desorption rate gradually increased and P adsorption rate gradually decreased, with the increasing amount of extraneous phosphorus added. A positive correlation was observed between Olsen-P content and phosphorus sorption saturation ( DPS) in the soil. In terms of soil maximum adsorption capacity ( X_m), the treatments of the experiment followed a decreasing order of CK > NPK NPKM > PK NPKS, and the differences between the treatments were extremely significant; Treatment NPK was much higher than CK and Treatments PK, NPKM and NPKS in adsorption constant (K) and maximum buffer capacity (MBC). And the comparison between last four treatments showed no significant difference in K value, and CK was extremely higher than Treatments PK and NPKS in MBC value, but the difference between CK and Treatment NPKM, and between Treatments PK and NPKS was not significant. Treatments NPKM and NPKS were significantly higher than Treatments NK and NPK in RDP, and Treatment NPKM was the highest in P desorption rate.
中文关键词	长期施肥 ; 磷 ; 灰漠土 ; 吸附与解吸
英文关键词	Long-term fertilization Phosphorus Gray desert soil Adsorption and desorption
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4882851
来源机构	新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230256
作者单位	1.中国农业科学院农业资源与农业区划研究所, 北京 100081, 中国; 2.新疆农业科学院土壤肥料与农业节水研究所, 乌鲁木齐, 新疆 830091, 中国; 3.新疆农业大学草业与环境科学学院, 乌鲁木齐, 新疆 830052, 中国
推荐引用方式 GB/T 7714	王斌,刘骅,李耀辉,等. 长期施肥条件下灰漠土磷的吸附与解吸特征[J]. 新疆农业大学,2013,50(4):726-733.
APA	王斌,刘骅,李耀辉,马兴旺,王西和,&马义兵.(2013).长期施肥条件下灰漠土磷的吸附与解吸特征.土壤学报,50(4),726-733.
MLA	王斌,et al."长期施肥条件下灰漠土磷的吸附与解吸特征".土壤学报 50.4(2013):726-733.