粉煤灰改良砂姜黑土与玉米生长关系的研究

Study on the Relationship between Ameliorated of Shajiang Black Soil Applied by Coal Fly Ash and Maize Growth

研究结果表明：粉煤灰施入砂姜黑土后，具有明显降低土壤容重，增加土壤孔隙度，提高土壤温度和保持土壤水分的作用，这一效果随粉煤灰用量的增加而增强。粉煤灰处理具有增加玉米叶面积系数，促进根系下扎和根系发育的功能，并以６０×１０３ｋｇ·ｈｍ－２处理产量最高。

The results of study showed that applying coal fly ash in Shajiang Black Soil could decrease the soil density,increase the soil porsity and temperature,and maintain the soil water content relatively high,and the more coal fly ash was applied,the better the effect of soil improvement was.Applying coal fly ash in Shajing Black Soil could also promote maize roots growth and increase maize LAI.The treatment of 60×10 3 kg·hm -2 of coal fly ash applied had the best harvest of maize.