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在选育水稻杂种优势新组合时，进行新组合产量比较试验是必不可少的环节，因此，每个新组会均须有数千粒种子．按常规法配制其杂交种子需要花费很多人力物力，且种子数量对质量又难以保证。近年来，我们摸索出一种压简使易行，又能保证其质量的少量制种法。现将此法介绍如下。?
In the new combinations of rice heterosis, it is essential to conduct a new combination of yield tests, so each new group will have to have thousands of seeds. It takes a lot of manpower and material resources to formulate the hybrid seeds according to the conventional method, and the quantity of seeds is hard to guarantee for the quality. In recent years, we have explored a small number of seed production methods that make it easy to implement and ensure its quality. Now this method is as follows. ?