According to the different requirements of the growth and flowering of Camellia, the following fertilization periods should be mastered: the first fertilization should be carried out from February to March. At this time, most Camellia flowers begin to germinate and should be fertilized with nitrogen fertilizer. Promote the sprouting of sprouts. The second fertilization should be carried out from April to May. In April, nitrogen fertilizer and potassium dihydrogen phosphate can be applied alternately to promote the strong growth of new shoots and provide necessary nutrients for the differentiation of flower buds. In May, the new shoots have all been lignified, and the flower buds have been Beginning to differentiate into flower buds, at this time, phosphate fertilizer-based fertilizer should be applied to increase the nutrients needed for flower bud formation.
　　 The third fertilization should be carried out from late June to mid-July. At this time, the temperature gradually rises, the plant grows slowly, and the nutrient is absorbed less. The thin fertilizer solution mainly based on nitrogen fertilizer should be applied. If the concentration is too high, it is easy to burn the roots. From late July to August is the high temperature dormancy period of camellia, so no fertilizer can be used. The fourth fertilization should be carried out from mid-November to mid-October. At this time, the Camellia plant enters the second growth period, the sap activity is strong, the roots continuously absorb water and nutrients, and the auxin is formed by photosynthesis, so it is necessary to timely fertilize the soil. It can be applied with nitrogen fertilizer, phosphate fertilizer and about one percent of superphosphate to form a mixed fertilizer solution to meet the nutrients needed for autumn growth and enhance the cold resistance of the plants in winter, laying a good foundation for the full bloom of the spring flowers. .
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Rock
wool Sandwich Panel
Rock Wool Sandwich Panel is a new type
of building material which is color steel sheet as the surface layer, rock
wool, fire retardant and flame retardant insulation material as the core layer.
Rock wool sandwich panel is suitable for
insulation, sound insulation, etc. of industrial equipment, buildings, ships
and so on
Advantage
of rock wool sandwich panel:
1. Good
fire resistance
2. heat
insulation and heat preservation:
3. Bright
in color
4. Bending
and compression resistance, high bearing capacity
5. Flexible
installation:
Description
of rock wool sandwich panel:
Structure:
Top is PPGI steel sheet, Core is rock wool, Bottom is PPGI steel sheet.
Feeding
width of steel sheet: Roof is 1200mm, Wall is 1000mm
Effective
width: roof and wall both are 950mm
The
thickness of steel sheet: 0.3-0.8mm
The
thickness of core: 50/75/100/150/200mm
Color:
White, blue, red or according to your requirement
Destiny
of rock wool:50-150kg
Length:
According to customer`s requirement
Usage:
Widely used as roof and wall material for Steel Structure warehouse,workshop,
poultry house,hangar,car
parking,gym,shelters
and so on.
Life
time: 15-20years
Packing:
Plastic packing and nude in the container or according to your requirement.
Payment
term: T/T, L/C, Western Union
FAQ:
1.
Are you a factory or trading company?
We
are a professional factory.
2. How
about the delivery time?
It`s
depends on the quantity, usually, it`s 15-20 days after we get your deposit.
3. Can
you do OEM?
Yes.
4. How
can you make sure the quality?
Our
products will be test before the shipping, and we will show you the test.
Rock Wool Sandwich Panels
Rock Wool Sandwich Panels,Rock Wool Sandwich Panel,Stone Wool Sandwich Panels,Rockwool Sandwich Wall Panel
Shijiazhuang Zhouming Steel Building Materials Co., Ltd. , http://www.zmsteels.com