施用沼肥对枣园土壤养分含量的影响

Study on Nutrient Content of Soil in Zizyphus Jujube Orchards with Applied Biogas Waste Fertilizer

在沼肥施用方式不同条件下分析枣园土壤有机质、全量及速效N、P、K含量的变化,结果表明:与试验前相比,无论施化肥还是沼肥都可以增强土壤养分容量及其供应强度,施肥处理的土壤氮、磷维持平衡或大幅度积累,但钾出现不同程度的亏缺;与施用化肥的对照相比,施用沼肥可显著增加土壤有机质含量,提高土壤全氮、全磷、全钾以及碱解氮、速效磷含量,效果以沼液根施最佳。

The variations of content of the soil organic matter,soil total N,total P,total K and available N,available P,available K in Zizyphus Jujube orchards applied biogas waste fertilizer was analyzed.The results showed that the chemical fertilizer and biogas waste fertilizer also could enhance soil nutrient capacity and supply intensity and make N,P in soil keeping balance or greatly accumulating.Compared with the chemical fertilizer,the biogas waste fertilizer could signcificantly increase the content of organic matter,total N,total P,total K and available N,available P in soil.And ex-root fertilization of liquid manure was the best application ways.