论文部分内容阅读
今年4、5月份,全省各地不少农户来信,反映油菜遭受严重病害,并询问防治方法。油菜病害对菜籽产量及油菜生产的发展影响很大,是我省油菜生产上存在的一大问题。值此播种时刻,为预防和减轻病害发生,再作一次公开答复。 油菜的主要病害有菌核病、龙头病(霜霉病、白锈病)、花叶病及生理上的缺硼症等。其中对我省油菜生产影响较严重的是菌核病及生理缺硼症。 一、菌核病 油菜从苗期到乳熟期均可发生,特别是盛花至终花期,常是病害流行的时期。在一般情况下可减产2～3成,严重的田块达6～7成。
In April and May this year, many farmers in all parts of the province wrote a letter, which reflected that the rape suffered serious diseases and asked about the prevention and treatment methods. Rape diseases have a great influence on rapeseed production and the development of rapeseed production, which is a major problem in rapeseed production in our province. At the moment of sowing, an open reply will be made for the purpose of preventing and alleviating the occurrence of diseases. The main rape disease sclerotisis, leading disease (downy mildew, white rust), Mosaic disease and physiological boron deficiency and so on. Which rapeseed production in our province is more serious sclerotisis and physiological boron deficiency. First, sclerotinia rapeseed from the seedling to milk stage can occur, especially the flowering to the final flowering, often disease epidemic period. Under normal circumstances can be reduced by 2 to 3 percent, a serious field of 6 to 7 percent.