Cultivation of grapes in the greenhouse can result in two fruits a year. The fruit is harvested twice in November. After harvesting, the plants must be removed and new plants must be replanted before they can be produced. It can be matured before and after the "May 1st" festival. The level of its output depends mainly on the quality and management of seedlings. Therefore, it is a crucial measure to cultivate healthy and vigorous seedlings with good flower bud differentiation. The main method is as follows:
1, big bags of false plants: the selection of 25-30 cm in diameter, depth of 30 cm in plastic bags or prepared bags, bottom cut holes (diameter 1 cm -1.5 cm) 2-3, filled with nutritious soil spare.
The cuttings or fillets of the seedlings were selected before and after the Ching Ming Festival, and they were planted in nutritional bags. The 30 cm × 50 cm spacing was planted on the open space in front of the shed to cultivate large seedlings.
2. Preparation of nutritious soil: 7 parts of sandy loam soil and 3 parts of decomposed chicken manure were thoroughly mixed and mixed.
3, seedling management:
(1) Dendritic adjustment: Prior to planting, the seedlings are first trimmed and the branches and the front part of the seedlings are trimmed, leaving only 2-3 winter buds at the base of the main vine.
After germination, the buds are wiped off in time, and 2 strong buds are selected to allow them to continue to grow. The resulting stems will be cultured. When the new shoots grow to 10-12 knots, 10 leaves are left to pick up. After topping, the tips of the first and second leaf sections are issued twice, leaving 4 leaves topping, 2 new shoots issued from the following 3rd and 4th leaf sections, leaving 2 leaves topping, and the rest of the lower leaf sections. Erasing in time. Three new shoots were made, and each new shoot only retained the tip 2 times 3 times, left 4 leaves topping, and all others were erased. After many new shoots were made, they were still processed according to this method. Each time the new shoots were made, only the tip of the apron was retained, leaving 4 leaves topping and leaving the rest erased (Fig. 5-1).
(2) Fertilizer and Water Management: From April to June, it is necessary to strengthen the management of fertilizer and water (http://), pouring ground water, combined with watering, and top dressing 2-3 times, each time applying 25 kg of compound fertilizer of potassium sulfate or urea. 25 grams, to promote seedling growth; after July, we must strictly control the moisture and reduce nutrient soil moisture content, as long as the leaves do not wilting phenomenon, do not water, in order to prevent excessive vegetative growth, affect flower bud differentiation.
(3) Strengthen foliar dressing: from the start of picking, spray the leaf fertilizer once every 7 days, use 600-1000 times “Tianda-21-16” and add 0.7% brown sugar solution, once every 7-10 days. Spray 3-4 times, can also be used 0.4% of potassium dihydrogen phosphate, 1% of superphosphate calcium leachate, 0.1% of light and micro-fertilizer, 0.1% of ferrocide, 0.1% of rare earth micro-fertilizer, etc., respectively, add 0.7% of brown sugar and 0.1% of corn syrup are used interchangeably.
(4) Pest control: Spray the leaves in time to ensure that the leaves are not harmed by pests.
As long as you do the above four items, you will be able to produce a large, well-differentiated and robust grape seedling.

Filter Equipments

There are many kinds of products which need filtration in industrial production. The material properties of these products are very different, and the purpose of separation is different. Therefore, it is necessary to select the filter equipment scientifically and reasonably according to the production needs such as material characteristics and separation purposes, in order to play its role effectively.

At present, the requirement of filtration equipment in industry is that the filtration accuracy is high, so that the solid content in the filtrate is low, and even the filtration precision is based on the number of solid particles in the filtrate.

In order to ensure the stability and reliability of the system, the cleanliness of the oil with precision components such as servo parts is strictly controlled in the international hydraulic system, and the new oil cleanliness is required to reach the fifth grade of the American Aerospace Standard nas1638 (American Aerospace Standard), so as to ensure the stability and reliability of the system. But in reality, the cleanliness of new oil is only 10-11 of nas1638. If the new oil is used without strict filter and purification, it will bring serious harm to the life of the precision components and the reliability of the work of the whole system. The cleanliness of hydraulic oil can be improved fundamentally only when circulating filtration is carried out simultaneously with the operation of hydraulic system.

Reverse osmosis filtration equipment is widely used in industrial production, industrial pure water system is designed from reverse osmosis process, referred to as reverse osmosis equipment. The water quality of reverse osmosis equipment is required before influent. If the water flow through reverse osmosis membrane directly through high pressure for a long time, it will cause membrane blockage.

In general, there are multi-medium filters, ion exchange, various kinds of precision filters in the pre-treatment equipment of the whole pure water system. These pre-treatment filters can effectively remove the suspended matter in the water.

According to the needs of the users, different levels of processes are used to make the quality of the produced water up to the standard. Of course, its price is also determined by the configuration of reverse

osmosis equipment.

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