土壤调理剂对盐化潮土理化性状及玉米产量的影响

Effects of Soil Conditioner on Salinized Fluvo-aquic Soil Physo-chemical Properties and Maize Yield

通过田间小区试验,以2种土壤调理剂为研究对象,对比分析施用土壤调理剂后对盐化潮土土壤理化性状及玉米产量的影响。结果表明,施用"免申耕"和"禾康"土壤调理剂可使土壤有机质和全氮含量显著增加,水溶性盐总量显著降低,显著提高土壤通透性。施用这2种土壤调理剂后,有利于玉米生育期的延长,收获期的延迟,改善玉米产量构成因素和经济性状。施用2种土壤调理剂较CK分别增产20.5%和23.1%,分别新增经济效益12.5%和15.2%。施用"禾康"调理剂后产量和经济效益最高。施用2种土壤调理剂对河西地区盐化潮土的改良效果和玉米增产效果显著,适宜本地区推广。

Field experiment was conducted to compare the effects of two kinds of soil conditioners on salinized tluvo-aquic soil physo- chemical properties, maize yield traits and economic efficiency. The result showed that both Mian Shengeng （hydrosolvent） and Hek- ang （hydrosolvent） soil conditioners increased soil organic matter, total nitrogen content and soil permeability significantly, but de- creased water soluble total salt significantly. The two kinds of soil conditioners could prolong the growth period of maize, delay harvest period, improve yield components and economic traits. The two kinds of soil conditioners increased yield by 20. 5 % and 23.1%, and economic efficiency by 12. 5 % and 15.2 % respectively. The Hekang （hydrosolvent） soil conditioner had the greatest effect on yield and economic benefit. Improvement effects by the two kinds of soil conditioners on salinized soil in Hexi region and maize yield are sig- nificant, which is recommended for extension to the local maize production.