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我们朝阳地区每年要从外地购进大量地瓜秧苗,不仅增加了生产成本,而且秧苗经长途运输,生活力下降,裁后死苗率高,严重影响产量。采用塑料薄膜温床育苗,简便易行,培育的秧苗健壮,可以缓和地瓜秧苗不足的矛盾。具体做法如下。1.筑床。选背风向阳地挖东西长2丈左右(依种薯数量而定)、宽3.6尺、深1.5尺的床坑。坑底挖两条0.5尺见方的通气沟,两沟在坑边汇合,通向在床外垒起的通气孔(两个通气孔要有高度差)。
We Chaoyang area every year to buy a lot of sweet potato seedlings from the field, not only increased the cost of production, and the long-distance transport of seedlings, decreased viability, cut the dead seedling rate, seriously affecting the yield. The use of plastic film hotbed nursery, easy, nurturing the seedling robust, can alleviate the shortage of sweet potato seedling contradictions. Specific practices are as follows. Build a bed Selected leeward sunny digging something about 2 feet long (depending on the number of seed potato), 3.6 feet wide and 1.5 feet deep bed. Two 0.5-foot-square vent grooves were dug at the bottom of the pit. The two ditches converged at the edge of the pit and led to the vent holes (the height of the two vents should be different) from the outside of the bed.