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为提升耕地质量,实现化肥减量增效目的。近年来,江西省永丰县在早稻示范中推广了“多施一斤石灰,增收一斤粮食”的防酸化土壤改良技术,示范推广表明,早稻施用生石灰作用明显,增产效果较好。据该县瑶田、八江、七都等乡镇早稻测产结果,施用生石灰一般亩增产稻谷30~55 kg,增产4%~7.5%。1早稻施用生石灰的主要作用1.1中和土壤酸性根据江西省永丰县2008~2015年6 841个农田土壤样品检测结果 ,土壤pH
In order to improve the quality of cultivated land and achieve the purpose of reducing fertilizer and increasing efficiency. In recent years, Yongfeng County, Jiangxi Province in the demonstration of early rice to promote “more than a kilogram of lime, an additional grain of food” anti-acidification soil improvement techniques, demonstrating the promotion of early rice application of quicklime, yield better. According to the county Yaotian, the eight rivers, seven are the township of early rice production test results, the application of quicklime acres of general rice 30 ~ 55 kg, an increase of 4% to 7.5%. 1 The main role of quicklime used in early rice 1.1 Neutralization of soil acidity According to the results of 6 841 farmland soil samples from 2008 to 2015 in Yongfeng County, Jiangxi Province, soil pH