【摘要】 为了探讨不同土壤改良剂(黏土、有机肥、生物质炭)对风沙土的改良效果,通过田间小区试验,研究了不同类型的改良材料对风沙土保水保肥性及玉米生长状况的影响。结果表明:施加生物质炭在短时间内可以显著提高风沙土的持水保肥能力,但对风沙土保水性的作用效果不明显;玉米生长期,施加生物质炭可以显著提高玉米叶片SPAD值,其增幅达62.72%～73.30%,而黏土、有机肥的改良效果不明显;同时,风沙土中施加生物质炭还可以促进玉米植株生长,提高产量,玉米拔节期叶枕株高、吐丝期叶枕株高、茎粗及产量的增加幅度分别为167.78%、29.77%、22.22%及129.31%。因此,生物质炭是优良的风沙土改良剂,有利于维持较高的土壤生产力。更多还原

【Abstract】 In order to investigate the effect of different soil amendments(clay,organic fertilizer,biochar) on the Aeolian sandy soil,field plot test was conducted to study the effect of soil amendments from different sources on fertility of aeolian sandy soil and maize growth.The results showed that,in short time,the application of biochar could significantly improve the water holding and nutrient retention capacities of the Aeolian sandy soil,but the effect of water retention was not obvious compared with the control.During growth period of maize,the application of biochar could significantly increase the content of maize leaf SPAD value by 62.72%～73.30%,but the effect of the clay and organic fertilizer was not obvious;Applied biochar could improve water holding and nutrient retention in Aeolian sandy soil,at the same time,could also promote the growth of maize plant,improve the yield.Leaf pillow plant height in maize jointing stage,leaf pillow plant height in silking stage,plant crude and yield increased by167.78%,29.77%,22.22% and 129.31%.Therefore,the biochar was considered as an excellent aeolian sandy ameliorant,which could maintain soil productivity in a high level,and it was of great significance in the construction of agricultural ecological environment.更多还原