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1 前 言 晚疫病是当前影响我国马铃薯生产发展的最严重的真菌性病害,在我国各大马铃薯产区每年都有不同程度的发生。目前,无论是国内还是国外,防治马铃薯晚疫病不外乎两种主要方式:培育抗病品种及药剂防治。随着晚疫病菌A2交配型在我国的出现,致使抗病育种的难度进一步加大,短期内难有成效,所以药剂防治仍是当前防治晚疫病的首选方式。但药剂防治也存在着一些弊端,如长期使用
1 Introduction The late blight is the most serious fungal disease affecting the development of potato production in our country. It occurs to varying degrees each year in major potato producing areas of our country. At present, neither domestic nor foreign prevention and control of potato late blight is no more than two major ways: to cultivate resistant varieties and pharmaceutical control. With the emergence of P. infestans A2 mating type in our country, the difficulty of disease-resistant breeding is further increased and it is hard to be effective in a short time. Therefore, the prevention and control of pesticides is still the first choice of prevention and control of late blight. However, there are also some shortcomings of chemical control, such as long-term use