At present, pests and diseases in apple orchards mainly include rot disease, lobular disease, aphids, snails, and beetles. Due to the recent high temperature, a variety of pests and diseases have occurred and spread rapidly. It is recommended that the majority of fruit farmers will be responsible for the prevention and control of pests and diseases due to the principles of economic safety, environmental protection, pollution-free and comprehensive management.
1. Agricultural control: Strengthen the management of orchard. Cut off the newly-occurring shoot buds, make the orchard ventilate and lighten, eradicate the orchard weeds to reduce the occurrence of pests and diseases, and at the same time take the cut off pests and leaves out of the garden and burn them.
2. Chemical control:
(1) Prevention and treatment of rot disease, using a blade to gently scribe on the skin (vibration can make the rot spores fly) with a brush to protect the tree general emulsion 20 grams per bag can be equipped with 500 grams of emulsion. The skin that has been infected with dead spores will begin to fall off after 30 days after the skin begins to dry for 30 days.
(2) Lobular disease is a physiological disease caused by zinc deficiency, which mainly shows that the leaves on the branches are small. Orchard with lobular disease, combined with organic fertilizer applied in spring, 0.5 kg of zinc sulphate per plant, effective for 3 to 4 years; 70% Antaisheng + new high-fat film WP 800 times in the growing season Can prevent and cure lobular disease.
(3) Prevention and control of aphids, top leaf moths, etc., can be controlled by 25% chlorfenapyr 3 suspension, 10% oxalocone wettable powder or 3% acetamiprid emulsifiable concentrate + new high fat membrane 800 times liquid.
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Materials: optical glasses such as flint glass, ultraviolet fused quartz and infrared fused quartz, as well as optical crystal materials such as calcium fluoride (CaF2), germanium (Ge), Zinc selenide (ZnSe) and silicon (Si)
External dimension: 4mm -- 100mm
Angle deviation: 30 seconds to 3 minutes
Surface accuracy: / 10-1
Surface quality: 60/40 Effective diameter: 90%
Plating film: according to customer requirements can be coated
In addition, we have more than a thousand kinds of standard products, and some of the standard products in stock to meet your needs
According to users' requirements, we can design and process various kinds of prisms, such as right-angle prisms, Equilateral Prisms, Dove Prisms, pentagonal prisms, roof prisms and so on with different base materials.
Materials: optical glasses such as flint glass, ultraviolet fused quartz and infrared fused quartz, as well as optical crystal materials such as calcium fluoride (CaF2), germanium (Ge), Zinc selenide (ZnSe) and silicon (Si)
External dimension: 4mm -- 100mm
Angle deviation: 30 seconds to 3 minutes
Surface accuracy: / 10-1
Surface quality: 60/40 Effective diameter: 90%
Plating film: according to customer requirements can be coated
In addition, we have more than a thousand kinds of standard products, and some of the standard products in stock to meet your needs
According to users' requirements, we can design and process various kinds of prisms, such as right-angle prisms, equilateral prisms, DOVE prisms, pentagonal prisms, roof prisms and so on with different base materials.
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Gold Dragon Optics Electronic Technology CO.,Ltd , https://www.golddragon-optics.com