植株达到5~6片叶时,才有较强的耐寒力。当日平均气温降到17℃~19℃时,*适合播种。方法是:先将种子用35℃温水浸泡12个小时,捞出风干,播种时用新高脂膜拌种,保温保湿,驱除地下虫,隔离病毒感染,增强萌发吸胀功能,提高菠菜种子发芽率。 |
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