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由于高肥水投入和高复种指数以及单一作物的连年种植,导致菜田土壤微生态系统失衡,线虫等土传病虫害肆虐,作物减产严重,研究连作障碍土壤修复培肥技术势在必行。2008年,石灰氮试验处理对土壤培肥和线虫控制已达到很好的效果,2009年北京市怀柔区农业技术推广站进行了大面积推广,增产、增收效果明显。同时,通过安排不同修复材料土壤处理对线虫控制的效果和混合修复材料土壤处理对线虫控制的效果实验,研究土壤培肥材料的优良,经试验方差分析云南烟碱肥施用杀线虫效果最佳。
Due to the high fertilization rate and high RSI and single cropping year after year, soil microbial ecosystem imbalance in vegetable fields, soil-borne diseases and pests such as nematodes, and serious crop production losses are serious. It is imperative to study soil remediation and fertilization techniques for continuous cropping obstacles. In 2008, lime nitrogen test has achieved good effect on soil fertility and nematode control. In 2009, Huairou District Agricultural Technology Extension Station of Beijing Municipality carried out large-scale popularization to increase production and increase revenue. At the same time, the effect of nematode control by nematode control and nematode control by soil treatment with mixed remediation materials were also studied by arranging the effect of soil treatment with different remediation materials on the nematode control. The excellent soil fertility-controlling materials were studied.