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农作物化学杀雄利用杂种优势,与选育“三系”利用杂种优势一样,也是提高产量的有效途径,并且它还具有一些独特的优点,如组合选配自由,亲本来源广泛,如果用适于当地自然气候条件和栽培制度、而且配合力强的优良品种作亲本,则可起到“推广品种加优势”的作用,达到高产更高产的目的。同时杂种优势可保持二、三代,不必年年制种。此外,化学杀雄简单易行,成本较低,适于大面积应用。因此化学杀雄利用杂种优势在近20多年来引
It is also an effective way to increase yield, as is the use of heterosis in the breeding of “three lines” of crop chemistry. It also has some unique advantages such as the freedom of combination and selection, wide range of sources of parents, Local natural climatic conditions and cultivation system, and with strong varieties of good parents as parents, you can play a “promotion of varieties plus advantages” to achieve the purpose of higher yield and higher yield. At the same time heterosis can maintain two or three generations, do not have annual seed. In addition, chemical kill male simple, low cost, suitable for large area applications. Therefore, the use of chemical malevolent heterosis cited in the past 20 years