轻度盐渍化设施土壤改良剂筛选

Filtration of Suitable Soil Amendments for Mildly Salinized Soil in Greenhouse

为筛选出适宜轻度盐渍化设施土壤的改良剂,采用田间小区试验的方法,研究了不同改良剂对设施土壤理化性状和蔬菜产量品质的影响。结果表明:施用改良剂能够明显改善土壤结构,改变盐分离子组成,提高蔬菜产量和品质。其中施用脱硫石膏(3 375kg·hm^(-2))+醋渣(1 125kg·hm^(-2))+沸石粉(2 250kg·hm^(-2))+秸秆(4 500kg·hm^(-2))改良效果尤为明显,与对照相比,土壤容重降低9.35%,渗透性增加385.71%,总孔隙度增加10.30%,番茄产量增加3.98%,VC含量提高了13.45%,可溶性总糖提高4.39%,糖酸比提高4.91%,是该地区适宜采用的一种土壤改良剂。

In order to screen out the suitable amendments for mildly salinized soil in greenhouse,a field plot ex periment was conducted to study the effects of soil amendments on soil physical and chemical properties and yield and quality of tomato in greenhouse. The results showed that soil amendments could obviously improve soil structure and change soil salt composition and improve yield and quality of tomato. Compared with the con trol the treatment about application gypsum （3 375 kg·hm^-2 ）, vinegar residue （1 125 kg ·hm^-2 ） , zeolite powder（2 250 kg·hm^-2）and straw（4 500 kg·hm^-2） had good effects,soil bulk density reduced by 9.35% ,soil permeability increased by 385.71% ,soil porosity increased by 10.3% ,the yield of tomato increased by 3.98% , VC contents increased by 13.45% ,soluble sugar improved by 4.39% ,sugar acid ratio improved by 4.91% ,it was suitable for the area.