【摘要】 通过高山白肋烟与结球甘蓝套作试验,对套作田块烟和菜的病害发生状况及其对土壤肥力的影响进行了调查。结果表明,白肋烟与结球甘蓝套作田块结球甘蓝病毒病比单作田块发病重,软腐病、霜霉病略轻;同样的白肋烟病毒病发生比单作田块偏重,但影响不大;白肋烟与结球甘蓝套作时白肋烟氮肥用量对白肋烟农艺性状、产量和产值以及烟叶化学成分没有明显影响;白肋烟套作结球甘蓝烟田土壤pH在共生期提高,套作后降低,土壤速效钾含量降低,烟田土壤有机质、碱解氮、速效磷含量提高。更多还原

【Abstract】 Burley and cabbage were intercropped to investigate the influences of burley-cabbage intercopping on soil fertility and diseases of burley and cabbage. Results showed that the cabbage and burley virus disease got worse in intercropped fields than that in monoculture, while cabbage soft rot and downy mildew got lighter in intercropped fields. Different nitrogen treatment in intercropped fields had no significant effect on agronomic characters of burley tobacco, yield and output value, and chemical constituents of burley leaves. Cabbage intercropping with burley changed the soil pH value, decreased available K content, and increased the organic matter, available N content, available P content.更多还原