干旱区生态环境知识资源中心(Arid): Potassium Fixation and Release in Some Calcareous Soils under Orange Cultivation

Arid

DOI	10.1134/S1064229320070108
	Potassium Fixation and Release in Some Calcareous Soils under Orange Cultivation
	Najafi-Ghiri, Mahdi; Boostani, Hamid Reza; Mirsoleimani, Abbas; Mohaviye-Asadi, Negin; Beizavi, Majid; Shafiei, Mina; Mirdoraghi, Maryam
通讯作者	Najafi-Ghiri, M
来源期刊	EURASIAN SOIL SCIENCE
ISSN	1064-2293
EISSN	1556-195X
出版年	2020
卷号	53 期号:7 页码:978-985
英文摘要	Arid and semiarid soils of southern Iran may fix a large content of applied potassium (K), but the fixed K may be gradually supplied to plants. Sixteen representative soils under orange cultivation (Citrus sinensis(L.) Osbeck) from arid and semiarid regions of southern Iran were selected and K fixation capacity of the soils were calculated. Then, the K-treated and control soil samples were extracted for K during 10 stages with 0.01 M CaCl2. Results indicated that the studied soils were able to fix 25 to 280 mg K kg(-1). Mean contents of cumulative K released ranged 48-262 and 8-512 mg kg(-1)for the control and K-treated soils, respectively, with significant difference (p< 0.05). The control soils released 42-69% (mean of 57%) of K during the first three stages of extraction, and this was significantly (p< 0.05) lower than that for the K-treated soils (55-86% with mean of 69%). No significant difference was found between the control and K-treated soils in K release during 4 to 10 stages of extraction. The fixation of added K is occurred in more available sites (wedge zone) of clay minerals and the fixed K may be released easily during the K extraction experiment. Thus, the availability of the fixed K (originated from chemical fertilizers) is considerably more than the native non-exchangeable K ions due to its fixation in the mineral edges. Generally, calcareous soils in arid environments had a high proportion of K-bearing minerals and able to fix added K fertilizers, but the fixed K may be released easily during the plant growth season and it should be considered as a benefit process.
英文关键词	CaCl(2)extractant calcium carbonate equivalent clay interlayer smectite wedge zone
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000554727400013
WOS关键词	NONEXCHANGEABLE POTASSIUM ; CLAY MINERALOGY ; KINETICS ; FRACTIONS ; AVAILABILITY
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325342
作者单位	[Najafi-Ghiri, Mahdi; Boostani, Hamid Reza] Shiraz Univ, Coll Agr & Nat Resources Darab, Dept Soil Sci, Shiraz 7459117666, Iran; [Mirsoleimani, Abbas] Shiraz Univ, Coll Agr & Nat Resources Darab, Dept Hort, Shiraz 7459117666, Iran; [Mohaviye-Asadi, Negin; Beizavi, Majid; Shafiei, Mina; Mirdoraghi, Maryam] Shiraz Univ, Coll Agr & Nat Resources Darab, Dept Agroecol, Shiraz 7459117666, Iran
推荐引用方式 GB/T 7714	Najafi-Ghiri, Mahdi,Boostani, Hamid Reza,Mirsoleimani, Abbas,et al. Potassium Fixation and Release in Some Calcareous Soils under Orange Cultivation[J],2020,53(7):978-985.
APA	Najafi-Ghiri, Mahdi.,Boostani, Hamid Reza.,Mirsoleimani, Abbas.,Mohaviye-Asadi, Negin.,Beizavi, Majid.,...&Mirdoraghi, Maryam.(2020).Potassium Fixation and Release in Some Calcareous Soils under Orange Cultivation.EURASIAN SOIL SCIENCE,53(7),978-985.
MLA	Najafi-Ghiri, Mahdi,et al."Potassium Fixation and Release in Some Calcareous Soils under Orange Cultivation".EURASIAN SOIL SCIENCE 53.7(2020):978-985.