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采用田间试验的方法,对于连作5年的温室黄瓜和连作4年的温室番茄,进行活性腐植酸不同组合的施肥试验研究。结果表明:活性腐植酸能够降低土壤容重,提高田间持水量;增加土壤有机质和有效养分含量,提高保护地土壤pH值,减缓土壤酸化,降低土壤含盐量;还能够提高土壤微生物数量,提高土壤酶活性、土壤温度和土壤呼吸速率。
Field experiment was conducted to study the fertilization experiment of different combinations of active humic acid for greenhouse cucumber continuous cropping for 5 years and continuous cropping for 4 years. The results showed that: active humic acid can reduce soil bulk density and increase water holding capacity in the field; increase soil organic matter and effective nutrient content, increase soil pH, slow down soil acidification and reduce salt content in soil; increase soil microbial quantity and soil Enzyme activity, soil temperature and soil respiration rate.