Maintenance and Management of Populus tomentosa Bonsai and Control of Diseases and insect pests
Guazihuang poplar, also known as Buxus tomentosa, thousand-year-old dwarf, etc., is an evergreen shrub or small tree of the family Populus, which is native to the Yangtze River Basin and the south of central China. Sex like warm, semi-overcast, humid climate, drought resistance, cold resistance, pruning resistance, is a shallow root tree species, slow growth, long life, is an excellent wood for bonsai production.
Maintenance and management Guazi Huang Yang likes to be wet and needs to be watered frequently to prevent the leaves from falling off due to water loss. The period from May to August is the peak growth period of Populus tomentosa, which can be combined with watering and applying thin rotten cake fertilizer for several times. Always pay attention to pruning overgrown branches, overlapping branches and extra branches that affect the shape of the tree. The fruits of melon seeds and yellow poplars should be picked in time so as not to consume nutrients. Generally speaking, small and medium-sized bonsai can be changed for 2 to 3 years and once every 5 years for small and medium-sized poplars. Plants with weak growth should be turned over in time. Combined with changing the basin, cut off some of the over-long and dense old roots, replace the new culture soil and replant.
The main diseases and insect pests of Populus tomentosa are the larvae of shell insect and leaf roll moth and soot disease. The control of leaf roll moth larvae and shell insects can be sprayed with 1500 times of dichlorvos. The key to the prevention and control of soot disease is to often spray water on the leaves and wash dust.
Melon seed and yellow poplar bonsai has dense branches and leaves and evergreen four seasons. It is not only a good indoor decorative plant, but also has a strong adsorption capacity to sulfur dioxide, chlorine, hydrogen sulfide, hydrogen fluoride and other toxic gases, and has the ability to absorb poisonous gas and purify air. It is a veritable indoor "evergreen purifier".
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The method of making bonsai of guazi and boxwood
Guazihuang poplar, also known as Buxus tomentosa, thousand-year-old dwarf, etc., is an evergreen shrub or small tree of the family Populus, which is native to the Yangtze River Basin and the south of central China. Sex like warm, semi-overcast, humid climate, drought resistance, cold resistance, pruning resistance, is a shallow root tree species, slow growth, long life, is an excellent wood for bonsai production. Bonsai materials one is to use sowing or cutting propagation, although a large number of seedlings can be obtained, but not only for a long time, but also it is difficult to get roots and claws, vigorous Gucci good material. The second is to dig up the old pile, and the high-quality material depends on more.
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Control methods of Populus tomentosa pests
The larvae of Populus tomentosa, Populus tomentosa and holly were used as nests to damage host plants, and the damaged leaves showed yellow withered spots at the beginning, and then the whole leaves fell off. Silk spinning binds the leaves and the fallen leaves together, so that the leaves can not be extended, the growth and development is seriously affected, and the whole plant dies when the damage is serious. Shanghai has three to four generations a year, with serious overlap of times. In the vertical year, March activities began to pupate in mid-April, and Eclosion began in late April.
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