怎样购买高质量的%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF组培苗?
一株优质%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF种苗是种植%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF的关键,所以这就要求种植户会选购上好的铁皮%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF苗,以保证成活率。那么,广大种植户应该怎样购买高质量的%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF组培苗?
1.品种纯正是关键:应该选择种源可靠、品种纯正、技术指标过硬的厂商生产的%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF种苗,一定不能选择没有具体名称,种源不明的,甚至连公司营业执照都没有的厂家提供的种苗。建议选择红杆软脚铁皮%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF,该品种具有“软脚”、“红杆”、“铁皮”的关键特质,移栽成活率高达95%以上,抗病能力强,生长快,发芽率高。2.外观:生长健康,没有病菌斑,组培基质不受到感染,部份茎出现红点。3.苗高:刚出瓶的组培苗,苗高应在3厘米到8厘米之间,过高和过低都不利于炼苗的成活率;不是苗越高越好,在根系固定的条件下,苗越高越容易死(根有限而苗过高,需要的水分和养分会在移栽时脱节,造成死亡)。4.茎粗:茎最粗处应在0。2厘米以上,在苗不过高的情况下,越粗壮越好。5.叶片:苗的叶片数在5片以上。
6.根系:每丛苗(一般三株一丛)2厘米长以上的根一般6条以上。7.根颜色:不能是纯白色,越绿越好,刚出土的土豆是白色,接受阳光的是绿色,%E6%BE%B3%E9%97%A8%E5%A4%AA%E9%98%B3%E9%9B%86%E5%9B%A2%E8%91%A3%E4%BA%8B%E9%95%BF苗最好是接受阳光驯化过的,所以要越绿越好,只有阳光下驯化的成活率才很高;很多小厂培育的苗因为节省开支,很多没有阳光驯化的条件,常常只在灯光下照射就销售,也是造成成活率不高的重要原因之一。
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