怎样科学繁殖炮仗花

植物图片 2020-02-17 09:24

炮仗花

炮仗花以扦插繁殖为主，一般在春夏花后进行，在温室条件下全年均可繁殖。

春季扦插：一般插后3周左右就能陆续生根。春季扦插的如及时栽植，加强培育，当年就能开花。扦插的插穗，要选用生长健壮、无病虫害的枝条，长度以10厘米左右为宜，每个插穗需有3~4节并带2个芽，在节下0.5厘米处切断，以利发根。切口要平滑，呈马耳形。扦插的介质可用清洁的细河沙，或蛭石、珍珠岩混合的介质(1：1)。在温室扦插，一般可直接插在插床上；家庭养花，一般将介质装入浅盆或木箱中，均需用碎瓦片垫底，以利排水畅通。扦插深度一般以插穗的1/3为度，株距为3厘米左右，行距稍宽。插入后，用手指稍压插穗基部，使插穗基部与介质密切结合，然后用细喷壶浇足水，以后每隔1~2天，进行1次叶面喷水，以保持湿润。3周后，如茎叶未出现萎缩，仍保持嫩绿色，说明切口愈合良好，并已生根，再过10天左右，可移栽盆内。刚上盆的幼苗需浇足水，放在半阴处养护。

专题： 炮仗花
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