东农248玉米制种技术

• 作 者: 凌德成 李容海
• 机 构: 黑龙江省依兰县种子公司,黑龙江省依兰县种子公司,
• 出 处: 种子世界
• 发表日期: 1988年04期
• 关键词: 自交系 隔离区 第二积温带 种子量 露芽 原父 联户 花粉量 父母本 母本

1.选择安全的隔离区。实行联户大方制种,土地应选较肥沃的黑沙壤土,排水良好、平坦、地温高,确保旱涝保收,忌选低湿洼地。 2.播种时间。黑龙江省第二积温带应在5月4～10日播完,辽西应在5月10～15日播完。 3.父母本行种植比例,是依据父本自交系花粉量大小、散粉时间长短、植株高低、土质及当地气候条件来定。本组合以1:4为宜。父母本可同时播种,但根据两年种植,父本可同母本同期先播2/3种子量,待第一期父本露芽时,及时把余下1/3父本种子播在原父本行内,这样两期播父本,

1. Choose a safe isolation area. The implementation of joint generous genetics, the land should be selected more fertile black sandy loam, drainage well, flat, high ground temperature, to ensure that the drought and salvage, avoid low wet depression. Sowing time The second accumulated temperature in Heilongjiang Province should be sown on May 4 ~ 10 and the western Liaoning should be sown on May 10 ~ 15. 3. Parents Bank planting proportion is based on male parent inbred lines of pollen size, loose powder length of time, plant height, soil and local climate conditions to be. The combination of 1: 4 is appropriate. Parents may have been sowing at the same time, but according to two years of planting, the father could sow two thirds of the seed with the same period of the same mother. When the first parent is exposed, the remaining one third of the sow will be sown immediately Inside the line, such two broadcast pens,