粉煤灰用于排土场农业复垦的试验研究

Experimental Study on Application of Fly Ash in the Dump reclamation of agriculture

在排土场农业复垦中,使用粉煤灰改良土壤并进行田间试验。试验选择谷子作为种植作物,对施加粉煤灰后的排土场土壤进行理化性质分析,对谷子的株高、穗长、每穗粒数、千粒重、亩产量进行实测。测定结果表明,施加粉煤灰后,排土场土壤性质得到改善,土壤中有机质、全量养分含量及速效养分含量增高,阳离子代换量增高,碳酸钙含量降低。土壤中施加粉煤灰以后,有利于谷子的株高增长,粉煤灰施加量的多少对株高影响不明显;粉煤灰对谷穗长度和千粒重影响较小;粉煤灰施加量越大,每穗颗粒数越多,亩产量越高。粉煤灰、农家肥、化肥同时施入土壤中,其改善土壤肥力和农作物生长状况效果更明显;粉煤灰适量使用不会造成土壤重金属污染。

In the study of dump agricultural reclamation,fly ash was used to improve soil of dump land ,and the millet was selected as the crops for field trials.Analysis on the physical and chemical properties of soil ap-plied after row of fly ash,measured on the millet plant height,ear length,kernel number per spike,1000 grain weight,Yield per mu.The determination results show that,after applying fly ash,soil properties were improved,increased the content of organic matter and available nutrients,nutrient in soil,cation exchange ca-pacity increased,reduce the content of calcium carbonate.When fly ash soil,increase plant height in favor of millet,the amount of fly ash applied effect on plant height was not obvious;fly ash has little effect on the spike length and 1000 grain weight;fly ash applied amount bigger,particle number per ear,yield is high.Fly ash,farm manure,chemical fertilizer and applied into the soil,improve soil fertility and crop growth condi-tions and the effect is more obvious;fly ash used in moderation will not cause heavy metal pollution in soil.