干旱区生态环境知识资源中心(Arid): 准噶尔盆地灰漠土无机磷形态及磷吸附特性研究

Arid

	准噶尔盆地灰漠土无机磷形态及磷吸附特性研究
其他题名	Forms of inorganic phosphorus and phosphate sorption characteristics of grey desert soil in Junggar Basin
	何帅 1; 尹飞虎 1; 谢海霞 2
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2017
卷号	40 期号:5 页码:1061-1069
中文摘要	选择新疆准噶尔盆地灰漠土作为研究对象,通过测定灰漠土中不同形态的无机磷素含量并进行土壤磷素等温吸附实验,研究灰漠土中各形态无机磷素的有效性和土壤磷吸附特征。结果表明,灰漠土中无机磷形态主要是Ca-P,占全磷含量75%以上,且以Ca_(10)-P形式为主,其次为Ca_8-P和Ca_2-P,无机磷中Al-P、Fe-P和O-P含量较少。全剖面中随着土层深度增加,Ca_2-P、Ca_8-P和Al-P占全磷总量的比例减少,Ca_(10)-P占全磷总量则有所增加,0~20 cm土层全磷和Olsen-P含量最高,分别平均为926 mg·kg~(-1)和51.54 mg·kg~(-1)。统计分析表明Ca_2-P、Al-P是最有效的磷源,Ca_8-P和Fe-P是第二有效磷源,O-P和Ca_(10)-P则是作物的潜在磷源。利用Langmuir方程拟合灰漠土的磷等温吸附曲线,得出土壤最大吸磷量(Xm)为957629 mg·kg~(-1),吸附参数(K)为149.28589.225;灰漠土的粘粒含量对Xm影响最大,其次是有机质,pH值影响最小。
英文摘要	The grey desert soil is the main soil type of Shihezi region,Junggar Basin in northern Xinjiang,China. Samples of the grey desert soil were sampled from NO. 147 farms and Agriculture Experiment Stations of Shihezi University and the physical- chemical characteristics and forms of the inorganic phosphorus were determined. The object was to analyze the availability of Olsen-P in grey desert soil. In the sorption experiments,the influence of the soils physics-chemical properties on the capacity maximizing of P adsorption was analyzed,and the phosphate sorption characteristics of the grey desert soil were also investigated. The results show that the grey desert soils in Junggar Basin were alkaline and had low quantity of soil organic matter. Under the influence of arid climate,the soluble salt and CaCO_3 accumulated in the surface soil. The total phosphorus(TP)contents were the highest in top soil(0-20 cm),followed by those in 20-50 cm and 50-80 cm,which were 926 mg· kg~(-1),734 mg· kg- 1 and 636 mg· kg- 1,respectively. The main typeof inorganic phosphorus(IP)in the grey desert soil was calcium bound phosphorus(Ca-P)which accounted for 75%,following by phosphorus bound to Al(Al-P),phosphorus bound to Fe(Fe-P)and occluded phosphate(O-P). From high to low,the Ca-P fractions ranked as: Ca_(10)- P,Ca_8-P and Ca_2-P. Olsen-P content in all soils were great in variation from 1.18 mg·kg~(-1) to 162.14 mg·kg~(-1). The number of Olsen-P had significant correlations with the number of Ca_2-P(r=0.990),Ca_8-P(r=0.595),Al-P (r=0.561)and Fe-P(r=454). Ca_2-P and Al-P were the most effective phosphate for plants,followed by Ca_8-P and Fe-P,O-P(r=0.045)and Ca_(10)-P(r=0.193)were the potential phosphorus sources. With the increase of soil depth,the percentages of the most effective Ca_2-P,Al-P and Ca_8-P in TP contents decreased and the percentage of Ca_(10)-P increased,leading to Olsen-P the highest in 0-20 soil layerwith the average value of 51.54 mg· kg- 1,and very low in 50-80 cm soil layer with the average value of about 2.62 mg·kg~(-1). The maximum P adsorption capacities(Xm)ranged from 328 mg · kg- 1 to 1 586 mg · kg- 1 and the phosphate sorption efficiency(K)ranged from 60.06 to 238.51. Xm had positive correlation(r=0.517,p<0.05)with soil pH values and had significant positive correlation(r=0.728,p<0.01)with the content of clay. Xm had negative correlation(r=-0.472,p<0.05)with the number of soils organic matter and had no obvious correlation with the content of CaCO_3,free ferric oxide, Olsen-P and TP. The influence order on Xm was clay > soil organic matter > pH value. With the increasing of the clay content and pH value,Xm increased. Thus,the grey desert soil with high pH values and clay contents had strong adsorption capacities for P,but the high soil organic matter content didnot benefit for Xm and the content of CaCO_3 had no influence on Xm.
中文关键词	磷素 ; 无机磷形态 ; 吸附特征 ; 灰漠土 ; 准噶尔盆地
英文关键词	forms of inorganic phosphorus sorption characteristics gray desert soil Junggar Basin
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:6101145
来源机构	石河子大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235955
作者单位	1.新疆农垦科学院, 石河子, 新疆 832000, 中国; 2.石河子大学农学院, 石河子, 新疆 832003, 中国
推荐引用方式 GB/T 7714	何帅,尹飞虎,谢海霞. 准噶尔盆地灰漠土无机磷形态及磷吸附特性研究[J]. 石河子大学,2017,40(5):1061-1069.
APA	何帅,尹飞虎,&谢海霞.(2017).准噶尔盆地灰漠土无机磷形态及磷吸附特性研究.干旱区地理,40(5),1061-1069.
MLA	何帅,et al."准噶尔盆地灰漠土无机磷形态及磷吸附特性研究".干旱区地理 40.5(2017):1061-1069.