Scarlet thistle, also known as burrowing cricket, Jiangnan pipa, is a variant of the Robinia pseudoacacia Robinia. Because its stems, twigs, pedicels have red bristles, hence the name "burrs." It has a wide variety of flowers and beautiful colors that can be planted or planted in gardens. The leaves of safflower were very similar to hedgehogs, with odd pinnate leaves, opposite leaves, 7 to 13 and oval. Butterfly corolla, pink or purple, 2 to 7 sparse racemes. Inflorescence infertility, capsule more than development, generally do not seed, it is difficult to reproduce with seeds, and more use of hedgehog as the rootstock for grafting. The safflower pod is a positive tree species, with strong cold resistance, drought tolerance and infertility. It can grow in slightly acidic or salty alkaline soils. However, soil that is too viscous or poorly drained can easily rot. It grows fast, is resistant to pruning, has strong sprouting ability, anti-dust and harmful gases such as hydrogen fluoride and ozone, and is an excellent greening and beautifying tree species. In the breeding of safflower pods, hedgehogs are often used as rootstock cuts (shrubs) and tall branches (small arbors). METHODS: From the end of March to the beginning of April, grafting was used to graft acacia rootstock from 1 to 2 years old. When grafting, select strong rootstocks and scion, cut the rootstock 10 centimeters away from the ground, use a knife to split it from the middle, and cut the scion of the red scion into a wedge-shaped insert. Cortical inlays, bundles, and piles. , You can survive two weeks later, and then cover the soil and cut off the buds in time. After the wood has survived, it grows very quickly and generally blooms the next year. High access is to choose large-size hedgehogs, grafting at a certain height, so that small trees form. After being alive, the sassafras grows quickly, the canopy stretches like an umbrella, and it blooms the next year. It is very beautiful. Each year, it is necessary to trim and trim the branches and overlapping branches to maintain the integrity of the crown.

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