Effect of Lime Dosage on Soil Physicochemical Properties and Yield of Rice Fields with Different Acidity Grades

doi:10.14088/j.cnki.issn0439-8114.2019.02.011

Abstract

Abstract: ： A comparative test of lime dosage on rice field with different acidity grades（pH 5.13/4.41） was carried out to study the effects of different lime dosage on soil physicochemical properties and yield. The results showed that the application of lime can effectively regulate soil acidity on pH 5.13 and 4.41 rice fields, and pH increased with the increase of the amount of lime. And the nutrient supply improved to some extent,mainly improving the content of organic matter and alkali hydrolysable nitrogen. The yield increased significantly,mainly reflected in the increase of effective tiller number,and the yield increased first and then decreased with the increase of the amount of lime. The yield increasing rate of two acidity rice fields was the highest when 600 kg/hm² lime was applied, and compared with the control, the increasing rate of theoretical yield were 16.9% and 23.4%,respectively,and the increasing rate of actual yield were 13.0% and 18.4%, respectively.

Key words: lime, soil acidity, rice field, soil physicochemical properties, yield

CLC Number:

SUN Yu-ping, XIE Xiao-fang, LI Jian-hua, LIU Yi, GONG Ling-ling. Effect of Lime Dosage on Soil Physicochemical Properties and Yield of Rice Fields with Different Acidity Grades[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(2): 50-52.

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