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据2年4茬定位试验结果,施用商品有机肥能明显改良涂园土壤,表现在土壤容重降低,有机质提高,阳离子交换量增大,使土壤疏松,土壤物理性状得到改善。施用有机肥量越多,土壤改良效果越好;每季施用商品有机肥3 750 kg.hm-2基本能维持土壤有机质、阳离子交换量、有效磷和速效钾含量;综合考虑作物生长和土壤改良效果,冬季作物可多施商品有机肥(7 500～15 000 kg.hm-2),夏季作物宜少施商品有机肥(3 750～7 500 kg.hm-2)。
According to the result of 2-year positioning experiment, applying commercial organic fertilizer can obviously improve the coating soil, showing the decrease of soil bulk density, the increase of organic matter and the increase of cation exchange capacity, making the soil loose and the soil physical properties improved. The more organic fertilizer was applied, the better the soil improvement was. The application of commercial organic fertilizer 3 750 kg.hm-2 per season could basically maintain the content of soil organic matter, cation exchange capacity, available phosphorus and available potassium. Considering crop growth and soil improvement In the winter crop, more commercial organic fertilizer (7 500 ~ 15 000 kg.hm-2) and commercial organic fertilizer (3 750-7 500 kg.hm -2) should be applied less in summer crops.