2024年7月18日 星期一 19:43:55

催芽播种 土豆增产

    马铃薯冬季播种春夏收获,是双季稻区提高复种指数,增加经济收入的有效途径。马铃薯增产技术有多种,但种薯催芽播种增产效果是比较显著的。
    种薯处理  种薯在催芽前要切块,一般每公斤种薯切成40~50块,每块20~25克,带1~2个芽眼。切薯时刀要消毒,刀刃要锋利,切面要平,不损伤芽眼。种薯切后用0.2%多菌灵或百菌清药液喷洒消毒,也可用黑白粉(石灰和草木灰各半混合而成)消毒。
    催芽方法  种薯催芽在播种前15~20天进行。催芽时应先选干燥通风的室内,然后在地上铺一层约3厘米厚的干净河沙,或湿润细土做催芽床,再将切块处理的种薯块均匀铺在上面,一层薯块一层河沙或细土。一般铺放2~3层种薯,上面盖湿沙或细土,其上再铺稻草或麻袋保湿保暖。催芽期间注意催芽床保湿,但切忌底部积水。经6~8天,当大部分薯块萌发出芽(芽长1厘米,一粒花生米大小)时,白天揭除稻草等覆盖物,使种薯见光绿化长粗壮后即可播种。一般每平方米催芽床可摆种薯45公斤左右。   

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