Artificial cross breeding is the method of creating new biological types 人工杂交是人工创造生物新类型的一种方法。
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Coefficient of biological type 生物型系数
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Abstract : at present foreign patterns of agricultural technology progress are mainly “ machine type ” in america and “ biological type ” in japen 文摘:目前国外的农业技术进步模式主要有美国的“机械型”模式和日本的“生物型”模式。
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The new types formed through cross breeding can combine the fine qualities and forms of two or more than two parents and become new biological types of higher productivity which are also more resistant to unfavourable conditions 通过杂交形成的新种(或品种) ，可以把两个或两个以上亲本的优良性状结合起来，成为一个具有更高生产性能和更能抵抗不良环境的新的生物类型。
