不同土壤调理剂对韭菜酸性土壤的改良效果

Effects of Different Conditioners on Improvement of Leek Acid Soil

为解决蔬菜基地土壤酸性化问题,恢复土壤的生产力,通过在韭菜酸性土壤上追施不同调理剂的小区试验,研究了BGA土壤调理剂、"田师傅"土壤调理剂和生石灰对土壤理化性质和韭菜生长发育的影响,评价不同土壤调理剂的施用效果。结果表明,调理剂对土壤pH的提高效果为生石灰>田师傅>BGA。BGA提高了土壤有效磷、有效钾和有机质含量,弥补了酸性土壤中钙、镁和硼的缺乏;田师傅调理剂能疏松土壤,使土质黝黑,提高有效氮、磷和钾含量;生石灰处理能提高有效氮和磷含量,降低有效钾含量。3种调理剂对防治韭菜干尖效果明显,提高了韭菜株高、茎粗、叶长叶宽,从而显著提高韭菜的产量,但对光合指标和品质影响不大。因此,3种调理剂都可在韭菜酸性土壤上推广应用。

Due to long-term use of large number of chemical fertilizer and serious shortage of inputs of organic fertilizer,a lot of leek soils showed acidification trends.In order to solve the soil acidity problem of vegetable bases and restore the productivity of the soils,effects of different conditioners such as BGA,tianshifu and lime soil conditioner on improvement of acid soil properties and growth of leek were researched by topdressing conditioner pot experiments,so that we can evaluate the application effects of different soil conditioners.The results showed that the effect of improving pH of soil conditioner was lime tianshifuBGA.BGA improved the soil available phosphorus,potassium and organic matter content in acid soil,made up the calcium,magnesium and boron deficiency;Tianshifu conditioner can loose soil,make the soil dark,increase the soil available nitrogen,phosphorus and potassium;lime can improve the effective nitrogen and phosphorus,but decrease potassium content.The three conditioners had significant control effects on leek dry tip,and improved leek plant height,stem diameter,leaf length,leaf width,obviosly increase the yield of leek,but had little effect on photosynthetic indexes and quality.The three conditioners can be applied in improment of leek acid soils.