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我区西瓜制种已有多年历史,种子质量也在逐年提高。近年我们成功地为美国、韩国进行了高质量的西瓜杂交制种,现将其技术措施简介如下: 1.选地隔离:西瓜制种需选择土质肥沃、地势平坦、排灌方便、集中连片、多年未有瓜茬的地块进行。周围隔离区要求在1000米以上。 2.亲本处理,消灭种子带菌:亲本种子在播种前用高猛酸钾溶液或60℃温汤处理,以消灭种子带菌,减轻病菌危害。 3.采取保护措施,适时早播,使花期避开雨季 (1)播前准备:首先是种子准备,即在播种的前一天,将处理好的亲本种子放在25℃发芽箱内催芽一昼夜,待种子露白时取出等待播种使用。其次是土地准备,也就是在播种的前一天将土地按1.5米的行距开
My district watermelon seed production has many years of history, seed quality is also increasing year by year. In recent years, we succeeded in the United States, South Korea conducted a high-quality hybrid seed production of watermelon, and now its technical measures are as follows: 1. Selection of isolation: watermelon seedlings need to choose a fertile, flat topography, irrigation and drainage facilities, For many years there is no plot of melon crop. Quarantine requirements around the 1000 meters above. 2. Parents to deal with the elimination of seed carriers: the parent seed before planting with high-potassium solution or 60 ℃ temperature soup to eliminate the seeds carrying bacteria to reduce the hazards. 3. Take protective measures, timely sowing, flowering to avoid the rainy season (1) sowing preparation: The first is the seed preparation, that is, the day before sowing, the processed parent seeds on germination 25 ℃ germination day and night, When the seed is out of white, wait for sowing. Followed by land preparation, that is, the day before sowing the land by 1.5 meters of row spacing