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我们对人工制种法进行了研究,认为其优越性有以下二点。一、人工制种是一项投工少效益高的措施。1、我们采用的人工制种法是将正交改为正、反交,使人工去雄与授粉两道工序合
We conducted a study of the system of artificial seed production and concluded that its superiority has the following two points. First, artificial seed production is a less effective investment measures. 1, we use the artificial seed production method is to change the orthographic to positive, anti-cross, so that artificial demons and pollination of the two processes together