The walnut tree is strong, adaptable, less pests and diseases, management and labor saving, convenient storage and transportation of fruit and long life.
Walnut trees are warm, hi-light, and have strict requirements on water, especially in the growth period of new shoots and fruit development period. They need more water supply, and should be grown on sandy loam with loose structure and good water permeability.
The growth cycle of walnut is divided into germination stage, leaf extension stage, flowering stage, fruit hard core stage and fruit ripening stage.
The fertilization of walnut is divided into base fertilizer and top dressing: 1. Base fertilizer: The base fertilizer should be used as early as possible. It should be completed before harvesting and harvested. Each adult tree is applied with 100~200 kg of high-quality organic fertilizer. 2. Topdressing: The appropriate period for topdressing is three periods: before flowering, young fruit expansion and fruit hard core. Generally, each plant will apply 0.8-1 kg of “Tianji†brand nitrophosphate fertilizer. 3. Foliar spray fertilizer: the spraying period is carried out in the flowering stage, the new shoot speed, the flower bud differentiation period and the harvesting. The commonly used spray fertilizer type is 0.1%-0.2% boric acid, 0.5%~1. % ammonium molybdate, 0.3% to 0.4% copper sulfate solution, and the like. (Li Shengyun)
Henan Daily Rural Edition
What are the characteristics of EPS Sandwich Panel ? What are the advantages of using it?
EPS sandwich panel are used in many buildings. The advantages of using this type of panels are obvious, and the price is also very favorable. There are many simple Prefabricated K House and Steel Structure Warehouse that use this type of board, so what are the advantages of its use?
low thermal conductivity
Because the thermal conductivity of EPS itself is relatively low, its effect as an insulation material is also very good, it can ensure the indoor temperature, and can also achieve a good energy-saving and environmental protection effect. It is precisely because of its good thermal insulation ability that under the same thermal insulation requirements, it can effectively reduce the thickness of the outer wall of the building and increase the internal usable area.
Good moisture-proof effect
Because the closed cell rate of the EPS sandwich panel reaches more than 95%, it is a kind of hydrophobic material, so there will be no moisture, and there will be no water seepage on the wall, which can ensure the reliability of the long-term use of the panel. . The Rock Wool Sandwich Panel is more susceptible to moisture.
Fire retardant effect
This type of material is resistant to high temperatures and also has very good fire resistance. Fire rating B1. And after a certain amount of flame retardant is added to its material, even if a fire occurs, it can also avoid natural disasters. Decomposition will only occur when encountering high temperature, and a carbonized layer is formed on the surface, and the safety of long-term use is also guaranteed.
strong security
The EPS sandwich panel has strong anti-deformation ability, and it will not be deformed or cracked after long-term use. Moreover, its installation stability is guaranteed, there will be no problems such as falling off, and the safety of long-term use is also guaranteed.
good sound insulation
Because the structure of this kind of board is stable and basically closed-cell, it can not only keep warm and waterproof, but also has a good sound absorption effect, and the sound insulation effect is also guaranteed.
Price concessions
Compared with other boards, EPS sandwich boards are cheaper in price and have a variety of properties, which is also very good in terms of cost performance. Therefore, if you want to ensure that the construction cost is favorable, then this type of sandwich panel is also very worthy of our choice, which can save a lot of construction costs.
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Henan Jinming Metal Material Co., Ltd. , https://www.jinminghouse.com