论文部分内容阅读
以芹菜、生菜、萝卜、西兰花、番茄、黄瓜、毛豆、菜豆为供试作物,采用田间小区试验的方法,研究了有机、SEQ、特别与常规栽培对土壤肥力的影响。结果表明,与常规栽培相比,有机栽培显著提高了土壤有机质、速效P、速效K的含量和土壤pH值,全N、碱解N含量差异不大;与本底值相比,常规栽培土壤的有机质、全N含量略有增加,碱解N、速效P含量明显增加,速效K含量、pH值略有降低;SEQ与特别栽培土壤的各项肥力指标变化总体上介于有机与常规栽培之间。不同方式栽培均能提高土壤肥力,其作用大小为:有机栽培>SEQ栽培>特别栽培>常规栽培。
The effect of organic, SEQ, special and conventional cultivation on soil fertility was studied by field plot test using celery, lettuce, radish, broccoli, tomato, cucumber, soybean and bean as tested crops. The results showed that compared with the conventional cultivation, organic culture significantly increased soil organic matter, available P, available K, and soil pH, with little difference in total N and alkaline solution N contents. Compared with the background value, Of organic matter, the content of total N increased slightly, the content of available N and available P increased obviously while the content of available K and pH decreased slightly. The changes of fertility indexes of SEQ and specially cultivated soils generally ranged from organic and conventional between. Different ways of cultivation can improve soil fertility, its role in the size: organic cultivation> SEQ cultivation> special cultivation> conventional cultivation.