关键词: 柑桔木虱, 柑桔木虱, 13种农药, 田间药效试验

Abstract:

Abstract: The celeriac is a rare vegetable varieties introducing to China. Field experiment was carried to study on the effects of the application of manure and added with inorganic fertilizers on celeriac yield and accumulation of nitrate. The results showed that there was the highest yield, significantly higher than other treatments, treated with organic and added with inorganic fertilizer with suitable proportion of nitrogen, phosphorus and potassium N1 (261kgN?hm-2); the nitrate content in the edible part of the underground is no significant difference, compared with the control，and there was higher nitrogen use efficiency. N2, N3 deal with a high nitrogen fertilizer production the yield was significantly lower under high amount nitrogen application than that of the treatment of N1, in particular there being no significant difference between the treatment of N3 and the control. However nitrate content in it increased with the increase of application of amount nitrogen increases. It is suggested that under conditions of high fertility of the soil in vegetable fields, the application of the appropriate proportion of organic and inorganic nitrogen, phosphorus and potassium fertilizers will help improve the yield of celery edible parts and good quality.