植煙土壤酸度調(diào)節(jié)定位試驗(yàn)研究
A Study on Acidity Adjustment in Flue-cured Tobacco-Planting Soils
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摘要: 研究了石灰,、白云石粉作為酸性植煙土壤改良劑對煙區(qū)土壤的改良效果及其對烤煙生長、產(chǎn)量和品質(zhì)的影響,。結(jié)果表明,，隔年施用白云石粉1 125 kg/hm2改良土壤酸度效果明顯，能促進(jìn)煙株的生長,；與對照相比,，產(chǎn)量提高117.45 kg/hm2，產(chǎn)值增加1 798.05元/hm2,，上等煙比例提高3.93個(gè)百分點(diǎn),，土壤pH從5.05升至5.36。Abstract: Lime and dolomite powder were applied to tobacco-planting soils to study their effects on soil pH, flue-cured tobacco growth, yield and quality. The results showed that applying dolomite powder at the rate of 1 125 kg/ha every second year adjusted soil acidity obviously and improved flue-cured tobacco leaf yield and quality. Application of dolomite powder increased tobacco leaf yield by 117.45 kg/ha, output value by 1 798.05 yuan/ha, the rate of high-grade tobacco leaves by 3.93%, and soil pH from 5.05 to 5.36.
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