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1 普遍操作的去杂方法及存在问题 1.1 熟期去杂即在小麦整个生长期只在成熟时搞一次去杂,是目前普遍应用的主要去杂方法。此期去杂,可有效地将穗型与众不同、高度明显突出的杂株去除,对提高种子纯度有举足轻重的作用。但一些株高较矮、抽穗较早及前期可根据叶型、叶色、穗色等性状加以鉴别的杂株和变异株,却很难识别与去除。同时,由于去杂过迟,生物学混杂已在所难免。
1 commonly used methods to remove impurities and existing problems 1.1 cooked to go to miscellaneous In the whole growing season of wheat only engage in miscellaneous when mature, is the most commonly used method to go to miscellaneous. This period to the miscellaneous, can effectively panicle distinctive, highly prominent removal of hybrid strains, to improve the purity of seeds play a decisive role. However, some plants with shorter plant height and earlier and earlier heading stages can be identified and removed according to leaf type, leaf color, ear color and other traits. At the same time, biological miscellaneous has been inevitable due to the delay of detoxification.