甘蓝丰产高效益的栽培管理内容摘要:
2、必须湿透土壤至 4米深。 水尽透后才撒土、播种、再盖干土。 莲座期灌水。 定植秧苗时灌一次定植水,4后灌一次缓苗水。 就控制灌水而蹲苗。 到莲作末期开始结球时,就应重灌水。 结球期灌水。 从结球开始重灌水后,叶球生长速度快,需要水分多,根据天气情况水分不可缺少。 一般是每隔一定的天数,地面见干就应重灌水,一直到叶球紧实而开始收获或每次收获后,都应重灌水。 中耕、培土及除草:甘蓝秧苗定植后,轻灌一、二次缓苗水后,即中耕、锄地、蹲苗。 一般早熟品种宜中耕二、三次,中、晚熟品种三、四次,第一次中耕宜深,要全面锄透,锄平畦面,以便保墒,促根生长。 以后中耕进入莲座期,宜浅锄并向植株四周培土,以促进外短缩茎多生侧根,有利结球。 在未封垄前,随中耕锄去杂草。 病虫害防治:在苗期易发生幼苗猝倒病,应慎选无病菌床土,适当控制灌水,多通风透气,预防其发生。 夏、秋甘蓝雨水过多时在结球期易发生软腐病,注意排涝。 专利查询。甘蓝丰产高效益的栽培管理
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