Matters needing attention in planting dwarf sunflower
Dwarf sunflower is currently a relatively new planting ornamental flowers, in order to let everyone better understand, the editor to introduce dwarf sunflower planting points for attention, let's take a look!
I. matters needing attention in planting dwarf sunflowers
Dwarf sunflowers can choose acidic to alkaline soil for planting, usually for reasonable water and fertilizer management. The water demand is large at the end of spring and the beginning of summer, and the topdressing period can not be ignored. Biological and pesticide control needs to be based on specific diseases, do not use at will.
2. introduction to the main points of dwarf sunflower culture
1. Growth habits
Dwarf sunflowers like sufficient sunshine and warm environment, not shade, not cold, the suitable temperature is between 15-30 degrees Celsius. Dwarf sunflowers are propagated by sowing, generally sowing during the Qingming Festival in April, and the suitable temperature for germination is 15-20 degrees Celsius.
2. Selection of basin soil
The basin soil selected for raising seedlings requires looseness, good water retention, asepsis and so on. It is better to transplant potted soil with sandy soil rich in humus and good drainage. When planting, it is necessary to apply sufficient basal fertilizer to the bottom of the basin, and when raising the seedling, bring more soil and less damage to the root, which is beneficial to the rapid recovery of the plant.
3. Pest control
Dwarf sunflowers should be fertilized once every two weeks during the growing period, but should be topdressing 2-3 times before flowering. Always keep the soil moist, especially high temperature and drought need to be watered in time. In order to make the main branch of the plant grow stout and healthily, the lateral buds can be removed and a pillar can be set up to prevent the wind from falling down. Common diseases and insect pests are powdery mildew and black spot, which can be controlled by removing residual plants and spraying 500 times of 75% chlorothalonil wettable powder or 800 times of 70% methyl topiramate wettable powder. Insect pests are mainly caused by blind bugs and red spiders, which can be sprayed with 1500 times of 40% dichlorvos EC or 75% propargite EC.
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