腐植酸制剂在设施蔬菜上的应用研究

Application of Humic Acid Preparation for Greenhouse Vegetables

土壤次生盐渍化和养分失衡已成为制约设施蔬菜生产的关键问题。为了探究腐植酸制剂在设施蔬菜上防治土壤次生盐渍化和平衡养分的应用效果,试验设计腐植酸制剂、与腐植酸制剂等养分的配方肥、常规施肥、不施肥(CK)4个处理,分别在设施番茄、黄瓜进行试验。结果表明,腐植酸制剂能够明显改善土壤理化性质,可有效降低土壤盐分,与CK相比差异显著(P<0.05);施用腐植酸制剂、与腐植酸制剂等养分的配方肥分别比CK番茄增产36.5%和26.1%,与CK相比,腐植酸制剂、与腐植酸制剂等养分配方肥分别使黄瓜增产39.5%和34.4%,同时对番茄和黄瓜的Vc含量、糖含量等品质指标改善明显,分别与对照达到显著水平(P<0.05)。可见,腐植酸制剂具有改善设施土壤性质,降低土壤盐分积累,明显提高蔬菜产量和改善品质的应用效果。

Soil salinization and nutrient imbalance have been the key issues that restricting vegetable production in greenhouse. In order to know the effect of the application of humic acid preparations preventing soil salinization and nutrient balance, treatments including humic acid amendment, formula fertilizer, regular fertilization, no fertilizer （CK） were conducted on tomato and cucumber .The results showed that compared with CK, humic acid amendment signiif-cantly improved soil physical and chemical properties, while reduced soil salinity effectively （P 〈0.05）. The yield of tomato and cucumber employed humic acid amendment and formula fertilizer respectively increased 36.5%and 26.1%, 39.5%and 34.4%. Furthermore, they signiifcantly improved the Vc content, sugar content and other quality indicators of tomato and cucumber （P〈0.05）, compared with CK. Therefore, humic acid amendment can improve soil properties in greenhouse, and reduce the accumulation of soil salinity to improve vegetable production and quality.