Farmland Soil Acidification in Linan City and Its Improvement Technology

doi:10.11923/j.issn.2095-4050.cjas15100001

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Journal of Agriculture ›› 2016, Vol. 6 ›› Issue (3) : 21-26. DOI: 10.11923/j.issn.2095-4050.cjas15100001

Farmland Soil Acidification in Linan City and Its Improvement Technology

谢国雄

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Abstract

In order to understand the farmland soil acidification situation in Lin'an City of Zhejiang Province, and provide basis for soil acidification control, the trend and characteristics of soil acidification of different types of farmland in Lin'an were systematically analyzed based on the soil fertility survey. The results showed that the double effect of both natural and human activities had caused obvious farmland acidification in Lin'an. The proportion of strongly acidic soil (pH＜4.5) and acidic soil (pH 4.5- 5.4) was 23.4% and 46.6% , respectively. The soil used for tea, mulberry and bamboo production showed the most obvious acidification, the farmland in Lin'an was severely acidified compared with the data obtained in 1982. Excessive fertilization and acid rain were major causes of farmland soil acidification. In order to prevent further acidification, in addition to rational application of fertilizers, it was necessary to learn experiences from both home and abroad, and take methods, such as inorganic improvement technology, organic improvement technology, bioremediation technology and biochar application, for farmland soil acidification control and improvement.

Key words

Lin'an City; Farmland Soil; Land Use; Soil Acidification; Improvement Technology

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谢国雄. Farmland Soil Acidification in Linan City and Its Improvement Technology[J]. Journal of Agriculture. 2016, 6(3): 21-26 https://doi.org/10.11923/j.issn.2095-4050.cjas15100001

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