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1.选地隔离关玉米是异花授粉作物,在制种过程中极易串粉混杂而降低种子质量,所以要严格选地隔离。空间隔离的距离必须在300米以上,时间隔离的时期,春播相差约40天,夏播相差约30天,以错开花期,防止生物学混杂。在保证隔离区安全的前提下,选
1. The election of isolation Guan is cross-pollination cross-pollinated crops, mixed powder easily in the seed production process to reduce the quality of the seeds, so to choose strictly isolated. Space isolation distance must be more than 300 meters, the period of time isolation, spring about a difference of about 40 days, summer broadcast difference of about 30 days, in order to staggered flowering, to prevent biological hybrid. Under the premise of ensuring the safety of the quarantine area, choose