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白叶枯病是水稻生产上一个重要病害,本省近年发展很快,对产量影响很大,1964年仅30个县市发生,现已遍及全省各县市。目前主要采取综合防治,而其中以选育抗病品种是一项主要的措施,为了尽快明确当前生产上推广的品种对白叶枯病的抗病性和寻找选用新的抗源及选育新的抗病高产品种,近两年来,我们开始了抗病性的鉴定和选育工作。 1976年供试的品种资源有2248个,品种429个(早稻206个,晚稻223个),国外引种583个,品系106个(早稻13个,晚稻93个),杂交后代组合475个(早稻423个,晚稻52
Bacterial blight is an important disease in rice production. The province has developed rapidly in recent years and has a great impact on the output. Only 30 counties and cities took place in 1964, and now it has spread to counties and cities across the province. At present, comprehensive prevention and control are mainly adopted. Among them, the selection of resistant varieties is a major measure. In order to clarify the disease resistance of the cultivars promoted by the current production as soon as possible and to find new sources of resistance and breeding new ones In the past two years, we started the identification and breeding of disease resistance. There were 2248 cultivars, 429 cultivars (206 early rice and 223 late rice cultivars) for testing in 1976, 583 foreign cultivars, 106 cultivars (13 early rice and 93 late rice) and 475 hybrids (early rice 423 A, late rice 52