泥炭和腐泥改良风沙土前后土壤理化性质比较

Comparing of Physic and Chemical Property of Aeolian Sandy Soil Before and After Improvement

本研究采用盆栽试验,通过在风沙土中添加不同比例的泥炭、腐泥及其混合物,对比试验前后各个处理的风沙土理化性质变化。结果表明,在风沙土中施入8%~12%的泥炭或者32%的腐泥或者二者混合添加,都可明显改善土壤容重和pH值,增加土壤养分含量和物理性粘粒含量。这一点,无论是在盆栽白菜前或者试验后的土壤中,都可以得到证明。但是在盆栽结束后,再次种植作物时,应根据作物的需要,补充氮肥,而磷肥和钾肥可以少加或者不加。

Three level of peat,10 level of sapropel and 3 levels of peat ＆amp; sapropel were respectively added into aeolian sandy soil to plant Chinese cabbage in the pot.The physical and chemical properties of soils with different treatments before and after planting were compared.The results showed that 8-12% peat or 32% sapropel or their mixture has obvious effect on improving of bulk density and pH value.Meanwhile,it obviously increases the content of nutrients and physical clay.This can be proved whether it is before or after experiment. But nitrogen should be added, phosphate and potash can be add a little or no if any crop was planted in the improved soils again.