摘要
通过盆栽试验研究,考察不同剂量(0、5%、8%、10%)的泥炭对混合沙土(沙土∶校园土=4∶1)的改良效果。结果表明,泥炭能提高混合沙土的持水能力,降低沙土的pH值和容重,增加沙土的有机质、速效氮和腐植酸含量;与对照相比,施入泥炭对盆栽作物——白菜的生长和生物量都有促进作用,其中在白菜生长前期,8%的泥炭处理是最佳方案;而在白菜生长后期,10%的泥炭添加量具有明显的后效。
In this paper, the improvement effects of different peat dosages on mixed sandy soil （the weight ratio of sandy soil and garden soil is 4 ： 1） were studied through pot culture test. The results showed that applying peat could improve capacities of holding water of mixed sandy soil, decrease soil bulk density and pH, and increase content of organic matter, available nitrogen and humic acid. Compared with control, peat application could also promote the seedlings growth of Chinese cabbage and increase its biomass. In the earlier growth stage, the treatment added 8% of peat was the best. While in the later growth stage, the treatment added 10% of peat showed obvious residual effect.
出处
《腐植酸》
2007年第4期29-31,47,共4页
Humic Acid
基金
吉林省科技发展计划项目(20060712)。
关键词
泥炭
沙土
改良剂
腐植酸
peat
sandy soil
conditioner
humic acid
