不同连作年限对大豆根际土壤养分的影响

Effect of Soybean Continuous Cropping on The Rhizosphere Soil Nutrition

为改善重迎茬对大豆产生的障碍。对不同连作年限大豆根际土壤的养分状况进行了测定,明确了连作对大豆根际土壤养分的影响,为通过营养补充手段改善重迎茬危害提供了依据。研究结果表明,连作处理根际土壤pH随连作年限增长呈下降趋势,各连作大豆根际土壤中氮、磷、钾、镁、锌、硼、钼、有机质等养分含量均低于正茬,不同连作年限对大豆根际土壤中铁、钙、锰含量的影响未表现出线形规律。

By the Laboratory of rhizosphere soil nutrition,we cleared the effect of soybean continuous cropping on the rhizosphere soil nutrition.The result showed that as the year continuous,the pH of rhizosphere soil was lower,and the content of Nitrogen,Phosphorus,Potassium,Magnesium,Zinc,Boron,Molybdenum,organic matter in the rhizosphere soil was lower,but the content of Iron,Calcium,Manganese had non-alignment law.