Look at the soil properties of the sandy soil due to good permeability, manure fertilizer is easy to decompose, can apply semi-fermented manure, but the sand soil is poor in fertilizer, so each dose should not be too much, and need to be applied deeper. For the sticky soil, the decomposed manure should be applied. Because of the good fertilizer retention, the dosage can be larger, and it is not suitable for ploughing.
Look at the climatic conditions in areas with low rainfall and low temperatures, or seasons, it is advisable to choose the fermented manure and deepen the tillage. For areas or seasons with high rainfall and high temperatures, semi-fertilized manure can be applied and turned slightly.
Look at the semi-fermented manure of fertilizer properties, which can only be used as base fertilizer. The composted manure can be used as both base fertilizer and seed fertilizer and top dressing. It must be covered after application for topdressing to avoid loss of fertilizer.
Farmers Daily
Fused Silica Meniscus Lenses,meniscus lenses ,positive meniscus lenses, negative meniscus lenses ,meniscus concave lens
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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)
Focal length: ±5mm -- ±1000mm±1%
(Germany TIROPTICS OPTOMATIC2000 test)
Outer circle: 4mm -- 200mm±0.1mm
Center thickness tolerance: ±0.1mm
Center deviation: 3-5 points
Surface accuracy: /2@
Surface quality: 40/20
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
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