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秋季,各种农作物相继成熟,正是选留农作物种子的好时机,俗话说:“好瓜出好瓢,好种出好苗。”这充分道出选留好种子,对夺取来年农业丰收的重要作用。选留农作物种子的标准必须具备以下条件:秸秆整齐,粗壮不倒;穗大粒多,籽粒饱满;色泽一致,无病虫害;产量高稳,品质优良。农作物选种方法:春季建立留种田的地块,可进行块选或片选。选留时,先除去杂株、病株、弱株,然后混合选留做种。株选穗选。秋收前,在计划留种的地块进行株选、穗选。首先要全面认识该品种的特性,然后选留生育健壮、抗逆性强、穗大粒
Autumn, a variety of crops have matured, it is a good time to choose to retain crop seeds, the saying goes: “Good melon out of a good scoop, a good kind of good seedlings.” The important role of harvest. Criteria for selecting and retaining crop seeds must meet the following conditions: tidy straw, not stout; spike large grain, full grain; color consistent, no pests and diseases; high yield and stability, high quality. Crop selection methods: the establishment of spring to stay farming plots, block selection or chip selection. When selected, first remove the hybrid strains, diseased strains, weak strains, and then mixed to stay as seed species. Plant selected ear election. Autumn harvest, plans to stay in the plots for plant selection, Sui election. First of all, to fully understand the characteristics of the breed, and then choose to stay healthy, strong resistance, spike large grain