蚯蚓粪土壤改良剂克服草莓连作障碍的效果

Effects of soil amendments ( earthworm-treated cow dung) for remediation of soil with continuous cropping obstacles in strawberry cultivation

为了更好地克服草莓连作障碍,在江苏省盐城市田间进行了草莓改良剂(蚯蚓粪)用量试验。设置改良剂用量分别为0 kg/m2、1.5 kg/m2、2.0 kg/m2、2.5 kg/m2、3.0 kg/m2和3.5 kg/m2,比较草莓的生长情况和土壤性质的变化。结果表明:改良剂用量为2.0 kg/m2时效果最好,土壤pH值为6.02,总盐分值为996.71 mg/kg,除硝酸盐以外,各离子含量及养分值均适合草莓的营养需求,草莓长势最佳,产量最高。

Field plot experiments for the remediation of soils with continuous cropping obstacles in strawberry culti- vation were conducted by application of different amount of soil amendment （ earthworm-treated cow dung）. Levels of soil a- mendment were set as 0 kg/m2, 1.5 kg/m2, 2. 0 kg/m2, 2. 5 kg/m2, 3.0 kg/m2 and 3.5 kg/m2 and the growth of straw- berry as well as the changes of soil properties were compared. The results revealed that strawberry achieved the best growth and the highest yield at soil amendment of 2.0 kg/m2, with soil pH of 6. 02 and total ion contents of 996. 71 mg/kg. Soil nutrients met the requirement of the growth of strawberry, with the exception of nitrate, which was a bit higher than what was needed.