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1、扦插时间以春季和夏秋为好。春季(3～4月)可在出室后利用修剪下来的一年生枝条进行扦插(也叫老技扦插),但成活率不太高,只有70%左右。夏秋正值三角梅生长旺季,选择当年生半木质化枝条进行嫩技扦插,成活率可达90%以上。只要加强管理,当年可以开花。2、扦插基质我们用粗河沙,山泥土、封火煤灰、素质土壤(园地土)按同等比例混合配制。再加入0.1%的多菌灵进行消毒处理,将土壤堆积,用薄膜覆盖7～10天即可。插床宽1米～1.2米,高15～20厘米,长度不限。3、插穗处理选节间短、粗壮的一年生枝条,剪成8～10厘米长,插穗上只留2～3片叶。扦插前用生根素处理一下,促其早生根,多生根。4、扦插方法深度以3～4厘米(相当于插穗的1/3或2/5)为宜。插前先用引插棒打孔,然后将插穗插入,稍按一下每个插条基部的基质,使插条与基质紧密接触。而后浇一次透水,在床上搭起拱棚,盖好薄膜密封,并盖上遮阳网。
1, cutting time in spring and summer is better. Spring (March to April) can be used after cutting out the annual branches pruning cuttings (also known as the old technical cutting), but the survival rate is not too high, only about 70%. Summer is the peak of Bougainvillea growing season, choose the current half-lignified branches for tender cutting, the survival rate of up to 90%. As long as strengthening management, then flowering. 2, cutting matrix We use crude sand, mud, fire coal ash, quality soil (garden soil) by the same proportion of preparation. Then add 0.1% carbendazim for disinfection, soil accumulation, with a film covering 7 to 10 days can be. Insert bed width of 1 to 1.2 meters, 15 to 20 cm high, the length is not limited. 3, cuttings treatment Alternative short, sturdy annual branches, cut into 8 to 10 cm long, leaving only 2 to 3 leaves on cuttings. Cuttings before treatment with root, promote its early roots, more rooting. 4, cutting depth of 3 to 4 cm (equivalent to cuttings 1/3 or 2/5) is appropriate. Before insertion, insert a pilot rod into the hole and insert the cuttings. Press the base of each insert briefly to make the cuttings in close contact with the substrate. And then pour a water, set up in the shed on the bed, covered with a thin film seal, and covered with shade net.