干旱区生态环境知识资源中心(Arid): 不同施磷处理下棉田土壤磷素吸持特征研究

Arid

	不同施磷处理下棉田土壤磷素吸持特征研究
其他题名	Study on the characteristics of phosphorus sorption in cotton field under different phosphorus application treatments
	唐雪霞; 杨浩; 盛建东; 岳继生; 陈波浪
来源期刊	中国土壤与肥料
ISSN	1673-6257
出版年	2021
期号	2 页码:1673-6257
中文摘要	为探究不同施磷水平对棉田土壤磷的固定和释放机制,对新疆典型棉田5种施磷水平(P0、P75、P150、P300、P450)及不同层次(0 ~ 5、5 ~ 10、10 ~ 20、20 ~ 40、40 ~ 60 cm)的灰漠土进行磷素吸附和解吸特性研究,结果表明:土壤磷吸附量随磷肥施用量的增加先增加后减小,以P150处理吸附量最大,P0和P75处理吸附量较小,其中P150处理最大吸附量较P0处理增加了45%;随土层深度的增加,各处理吸附量逐渐增大,处理间吸附量的差异逐渐减小,40 ~ 60 cm土层最大吸附量为0 ~ 5 cm土层的2.10倍。土壤磷的等温吸附曲线与Langmuir、Freundlich和Temkin方程的拟合度都达显著水平(P<0.05),土壤最大吸附量(Xm)与等温吸附曲线一致,以0 ~ 5 cm土层P75处理最小,为476.19 mg·kg~(-1),随土层深度增加而增加,吸附常数(K)与Xm呈相反趋势;随施磷量的增加,土壤最大缓冲容量(MBC)呈增加趋势,深层土壤小于表层土壤;土壤磷素吸附饱和度(DPS)以P75处理最大,整体随土层深度的增加而减小。土壤磷解吸量与解吸率随吸附能力的增加而减小;土层越深,解吸量与解吸率越小,其中0 ~ 5 cm土层解吸量为40 ~ 60 cm土层的2.06倍。增施磷肥能够提高棉田土壤贮存磷的能力,施磷量75 kg·hm~(-2)降低土壤对磷的吸附能力,增加土壤对磷的解吸,深层土壤磷的吸附特性受施肥水平的影响较小,供磷能力小于表层土壤。
英文摘要	In order to explore the mechanism of phosphorus fixation and release in cotton field with different phosphorus application levels,the phosphorus adsorption and desorption characteristics of five phosphorus application levels(P0,P75,P150,P300,P450)and different layers(0 ~ 5,5 ~ 10,10 ~ 20,20 ~ 40,40 ~ 60 cm)of grey desert soil in typical cotton fields of Xinjiang were studied.The results showed that the adsorption capacity of soil phosphorus increased first and then decreased with the increase of phosphorus application,and the adsorption capacity of P in P150 treatment was the largest.The adsorption capacity of P0 and P75 treatment was small.And the maximum adsorption capacity of P150 treatment increased by 45% compared with that of P0 treatment.With the increase of soil depth,the adsorption capacity of each treatment increased gradually,and the difference among treatments decreased gradually.The maximum adsorption capacity of 40 ~ 60 cm soil layer was 2.10 times of that of 0 ~ 5 cm soil layer.The fitting degrees of isotherm adsorption curve of soil phosphorus with Langmuir,Freundlich and Temkin equation were all significant(P<0.05).The maximum adsorption capacity of soil(Xm)was consistent with isotherm adsorption curve,and P75 treatment in 0 ~ 5 cm soil layer was the smallest,which was 476.19 mg·kg~(-1),and increased with the depth of soil layer.The adsorption constant(K)was opposite to Xm.The maximum buffer capacity of soil(MBC)increased with the increase of P application,and the deep soil was smaller than the surface soil.The phosphorus adsorption saturation of soil(DPS)was larger at P75 treatment,and decreased with the increase of soil depth.The phosphorus desorption capacity and desorption rate of soil decreased with the increase of adsorption capacity,and the deeper the soil layer,the smaller the desorption capacity and desorption rate.The desorption capacity of 0 ~ 5 cm soil layer was 2.06 times of that of 40 ~ 60 cm soil layer.Application of phosphorus fertilizer improved the ability of soil storage of phosphorus in cotton field,the application amount of 75 kg·hm~(-2) reduced the adsorption capacity of soil to phosphorus and increased the desorption of soil to phosphorus.The adsorption characteristics of deep soil phosphorus were less affected by the level of fertilization,and the phosphorus supply capacity was less than that of the surface soil.
中文关键词	棉田 ; 磷 ; 吸附 ; 解吸 ; 灰漠土
英文关键词	cotton field phosphorus adsorption desorption grey desert soil
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6965495
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365481
作者单位	唐雪霞, 新疆农业大学草业与环境科学学院, 乌鲁木齐, 新疆 830052, 中国.; 盛建东, 新疆农业大学草业与环境科学学院, 乌鲁木齐, 新疆 830052, 中国.; 杨浩, 中国农业大学土地科学与技术学院, 北京 100083, 中国.; 岳继生, 新疆慧尔农业集团股份有限公司, 昌吉, 新疆 831100, 中国.; 陈波浪, 新疆农业大学草业与环境科学学院;;新疆慧尔农业集团股份有限公司, ;;, 乌鲁木齐;;昌吉, 新疆;;新疆 830052;;831100, 中国.
推荐引用方式 GB/T 7714	唐雪霞,杨浩,盛建东,等. 不同施磷处理下棉田土壤磷素吸持特征研究[J],2021(2):1673-6257.
APA	唐雪霞,杨浩,盛建东,岳继生,&陈波浪.(2021).不同施磷处理下棉田土壤磷素吸持特征研究.中国土壤与肥料(2),1673-6257.
MLA	唐雪霞,et al."不同施磷处理下棉田土壤磷素吸持特征研究".中国土壤与肥料 .2(2021):1673-6257.