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秋季是田间选种的黄金时节,适时进行田间选种,是保证年农业丰收的重要环节。目前,除了玉米种由国家统一供给外,其它各种作物的种子都应在秋季收获期前,抓住时机把种子选好留足。(1)田间选种的优点①增产明显。田间选出的种子,可比一股种子增产20—30%。③能直接看到作物的生育状况和个体特征。③能根据选种标准,选择突出的,生育期相同的优良品种。④能选出地方优秀良种。
Autumn is the golden season of field selection, timely field selection, is to ensure that the harvest of agriculture an important part. At present, except for the supply of corn by the state, the seeds of other crops should be seized at the right moment before the autumn harvest. (1) the advantages of field selection ① yield significantly. Selected seeds in the field, 20-30% more yield than a seed. ③ can directly see the crop’s fertility and individual characteristics. ③ According to the selection criteria, select the outstanding, the same growing fine varieties. ④ can choose the best local elite.