Four methods of skillfully treating diseases and insect pests of flowers and trees bonsai
It is easy to pollute the environment by using pesticides to control flower and plant diseases and insect pests. Four methods of safe control of flower and plant diseases and insect pests are introduced.
I. spraying method
(1) the aphids on plum blossom, rose and pomegranate can be killed by soaking in 0.5 kg of plant ash and 2.5 kg of water for 24 hours and spraying its filtrate.
(2) spraying with 0.1% baking soda solution can control powdery mildew of rose, chrysanthemum, impatiens, hibiscus, melon and leaf chrysanthemum and other flowers, and the prevention and treatment rate can reach more than 80%.
(3) spraying 2% urea solution every 10 days for 2 to 3 times can kill aphids, red spiders and other pests on flowers and trees.
2. Smear method
The main results are as follows: (1) dipping cotton balls in vinegar and gently rubbing on camellia leaves can not only kill shell insects, but also turn green leaves that have been damaged by shell insects.
(2) the shell insects can be removed by repeatedly rubbing the leaves of orchids with alcohol.
(3) if the branches of the stump bonsai are rotten, scrape off the rotten part of the stump with a blade sterilized with iodine, then apply iodine wine and rub it once every 7 to 10 days to prevent further decay.
III. Fertilizer application method
The main results are as follows: (1) mixing a small amount of silicon fertilizer to flowers and trees can improve the hardness of their epidermal cells and enhance the ability of resistance to insect pests.
(2) frequent sprinkling of plant ash can not only greatly reduce the incidence of Botrytis cinerea in flowers such as peony, tulips and cyclamen, but also promote the stout branches and colorful flowers.
IV. Injection method
Woody flowers are often harmed by longicorn beetles, gibberries, wood moths and other trunk borers, which can seriously lead to hollow branches. In order to control such pests, the larval eggs can be killed by injecting 20 to 30 milliliters of ammonia with 20% concentration into the wormhole during the larval incubation period, before adult Eclosion and when the larvae are overwintering, and then seal the wormhole with clay or wax.
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Pest control of Phalaenopsis
Pest control is an important link in the successful cultivation of Phalaenopsis. Disease prevention is a regular work, the cultivation environment must be well ventilated, the plant material and air humidity are suitable, and Bordeaux liquid, chlorothalonil and Haoshengling are sprayed regularly to prevent the disease. -apply pesticides in time to prevent and control diseases and insect pests. Main diseases and control: 1. Petal Botrytis cinerea: black mildew spots grow on the petals, and mycelium can be seen on the moldy spots. 2. Anthrax: large dark brown or light brown oval or amorphous disease spots grow on the leaves.
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Propagation management of oleander
The propagation method of oleander can be propagated by cutting, ramet and striping, among which cutting is the most commonly used propagation method. Cutting can be carried out in both spring and summer. If the cuttings were soaked in clean water for 7 ~ 10 days before cutting and kept fresh, they could take root ahead of time and the survival rate would be improved. The specific method is that the 1-to 2-year-old branches cut in spring are cut into stem segments of 15 cm ~ 20 cm, 20 or so are tied up in a bundle, soaked in clean water, and the water depth is 1 ℃ 3 of that of the stem segment. The water at the same temperature is changed once every 2 days, and the temperature is controlled at 20 cm ~
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