摘要
使用高羊茅作为指示作物,采用田间小区及随机区组的试验方法,研究施用不同含量的气化渣复配土壤调理剂 ET1(1 000 kg/667 m2)、ET2(2 000 kg/667 m2)、ET3(4 000 kg/667 m2)、ET4(8 000 kg/667 m2)对风沙土土壤性质的影响.结果表明:(1)施用气化渣复配土壤调理剂可有效改良风沙土的物理性状.与CK相比,土壤含水量平均增幅18.12%;土壤容重平均降幅3.23%;地温平均增幅2.68%;(2)施用气化渣复配土壤调理剂可有效改良风沙土的化学性状.(3)施用气化渣复配土壤调理剂可有效改良高羊茅的农艺性状.土壤地温的增加可以使作物安全越冬、提高种子存活率.因此,气化渣复配土壤调理剂能有效改善风沙土土壤的理化性状,显著改善高羊茅的农艺性状,并且使用8 000 kg/667 m2 的气化渣复配土壤调理剂为最佳选择.
Abstract
Using tall fescue as an indicator crop,and using field plot and randomized block experimental methods,a study was conducted to investigate the effects of applying different amounts of gasification slag com-bined with soil conditioner ET1(1 000 kg/acre),ET2(2 000 kg/acre),ET3(4 000 kg/acre),ET4(8 000 kg/acre)on the soil properties of aeolian sandy soil.The results indicated that:(1)the application of gasifica-tion residue combined with soil conditioner effectively improved the physical properties of sandy soil.Compared with CK,the average increase in soil moisture content was 18.12%;The average decrease in soil bulk density was 3.23%;The average increase in ground temperature was 2.68%;(2)The application of gasification resi-due combined with soil conditioner effectively improved the chemical properties of aeolian sandy soil;(3)The application of gasification residue combined with soil conditioner effectively improved the agronomic characteris-tics of tall fescue.Based on the data,an increase in soil temperature can ensure safe overwintering of crops,im-prove seed survival rate,and also lead to early greening of crops.Compared to unfertilized crops,it leads to ear-lier growth period.Therefore,the combination of gasification slag and soil conditioner can effectively improve the physical and chemical properties of sandy soil,significantly improve the agricultural characteristics of tall fescue.The use of 8 000 kg/acre of gasification slag combined with soil conditioner represents the optimal choice.
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