不同碱性材料对酸性土壤的改良效果研究

Improvement Effects of Different Alkaline Materials on Acidic Soil

为有效改良酸性土壤,研究了熟石灰、奎米素、滑石粉等5种材料对萝卜产量及效益的影响。试验结果表明,熟石灰、奎米素、滑石粉等对萝卜产量及土壤p H值的影响与材料本身的p H值变化趋势基本一致。熟石灰、奎米素当季效果好,萝卜增产极显著,增幅在6%-8%,土壤p H值可由4.98提高到5.63-5.78,增幅在10%以上;双飞粉、滑石粉效果较好,当季土壤p H值提高幅度在5%-10%;石膏粉当季效果差,当季土壤p H值变化低于5%。滑石粉、双飞粉和石膏粉增产显著,但增产不增收,因此,此次试验筛选出的理想材料为熟石灰和奎米素。

In order to improve acidic soil effectively, we studied the effects of five alkaline soil conditioners, slaked lime,QUIMI-TE（Ulexite）, talcum powder, etc. on yield and economic benefit of radish. The results showed that, the effects on radish yield and soil p H value were basically the same as the variation trend of the p H value of the five alkaline soil conditioners. Slaked lime and QUIMI-TE had the best improvement effect, and the radish yield was significantly increased by 6%-8%, while the soil p H value was raised from 4.98 to 5.63-5.78. Ca and Mg powder and talcum powder had better improvement effect, with the soil p H value increased by 5%-10%, but gypsum powder had the worst improvement effect,with the increment of soil p H value less than 5%. The three materials talcum powder, Ca and Mg powder and gypsum powder had significant yield-increasing effect, but made net output value decreased, as a consequence, the perfect soil conditioners were slaked lime and QUIMI-TE（Ulexite） in the test.