近几来,随着广大农民科技意识的不断增强,对农作物良种的引进种植也愈加广泛,取得了显著的经济效益和社会效益。但是,当前的良种较多,加之良繁体系尚不够健全,盲目引种往往事与愿违,导致良种不高产甚至减产现象的发生,造成不应有的经济损失。因此,引用良种必须做到“五要”。一、要因地制宜良种是相对 In recent years, as the majority of peasants’ awareness of science and technology continues to increase, the introduction and cultivation of improved varieties of crops has become more widespread and remarkable economic and social benefits have been achieved. However, the current more varieties, coupled with the good propagation system is not yet sound enough, blind introduction is often contrary to expectations, resulting in the production of high yield or even reduce the phenomenon, resulting in undue economic losses. Therefore, the quoted seed must be “five to ”. First, local conditions should be relatives