Evaluation of Soil Nutrient Content and Fertility in Main Dry Farming Regions of Laos

Shuyi LIU; Yuyi HUANG; Guifen CHEN; Yancheng MENG; Bin LIU; Zhong LIU; Yanfei HUANG; Liping XIE; Qizhan TANG; Moryang CHUAYENG

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Evaluation of Soil Nutrient Content and Fertility in Main Dry Farming Regions of Laos

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[Objectives]To evaluate the status of soil nutrient and fertility in main dry farming regions of Laos,and to explore differences in soil nutrient content between regions and crop types.[Methods]By collecting 57 soil samples in the 0-20 cm layer of the main dryland in southern and northern provinces of Laos.Soil pH,organic matter,total nitrogen,available nitrogen,available phosphorus,available potassium,exchangeable calcium,exchangeable magnesium and available zinc content were analyzed.[Results]The soil in the main dry farming regions of Laos was acidic,the overall fertility level was good,and the exchangeable calcium and magnesium contents were low.There were differences in soil nutrient content in the dry farming regions of southern and northern Laos.Drylands where cassava and maize were growed had higher fertility.[Conclusions]It is suggested to apply lime or alkaline fertilizer in the dry land with acid soil to increase soil pH and increase the supply of soil calcium and magnesium.Organic fertilizer should be applied to improve soil water retention capacity,and it is necessary to pay attention to the fertilization ratio of macroelements to balance fertilization.

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来源
《亚洲农业研究：英文版》 |2022年第3期|25-29|共6页
作者
Shuyi LIU; Yuyi HUANG; Guifen CHEN; Yancheng MENG; Bin LIU; Zhong LIU; Yanfei HUANG; Liping XIE; Qizhan TANG; Moryang CHUAYENG;
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作者单位

Guangxi Academy of Agricultural Sciences;

Nanning 530007;

China;

Agricultural Resources and Environment Research Institute;

Guangxi Academy of Agricultural Sciences;

Nanning 530007;

China;

Agro-Products Quality Safety and Testing Technology Research Institute;

Guangxi Academy of Agricultural Sciences;

Nanning 530007;

China;

Department of Agricultural Land Management(DALaM) of Agriculture and Forestry;

Vientiane 01000;

Laos;

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原文格式 PDF
正文语种 chi
中图分类土壤学;
关键词
Dry land; Soil nutrient content; Fertility evaluation; Laos;

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Evaluation of Soil Nutrient Content and Fertility in Main Dry Farming Regions of Laos

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