"Red", also known as "Red Earth", is an Eurasian species. The fruit is large and colorful, the flesh is hard and brittle, the flavor is good, the quality is excellent, and it is resistant to storage and transportation. It is deeply affected by growers, reservoirs, distributors and consumers. Welcome, the market price is higher than other varieties of the same product. Facility cultivation in the cold and cold regions of the plateau can achieve better economic benefits. Main Controller,Ws2811 Dmx Controller,Outdoor Remote Controller,Program Led Pixel Controller Shen zhen SH LED Technology Co.,Ltd , https://www.pixellightsolutions.com
Red grape was introduced to China in the late 1980s, and the planting area has gradually expanded in recent years. In 2005, under the guidance of Gansu Agricultural University, the red grape was introduced into the Tianzhu Tibetan Autonomous County, which was successfully planted in the solar greenhouse, and was widely promoted in 2007.
Tianzhu County is located in the central part of Gansu Province and the eastern end of Qilian. It is a continental plateau monsoon climate in the Qinghai-Tibet, Inner Mongolia and Loess Plateau. The elevation is between 2040m and 4874m, the annual average temperature is 1°C, and the annual precipitation is Between 260 mm and 600 mm. Due to poor climatic conditions and insufficient effective accumulated temperature, the grapes cannot be planted in the open field and can only be cultivated. Gansu Agricultural University, in view of the inferior conditions of traditional agriculture in cold and cool areas, has been conducting research on grape cultivation in cold and cold areas for many years, using cold and cold climate resources in alpine regions, and taking advantage of advantages and disadvantages, using solar greenhouses for protection, extending and pushing the grapes. During the growth and development period, the production period is regulated on New Year's Day and Spring Festival. The wholesale price per kilogram is between 16 yuan and 20 yuan, and the average mu income is 2.4 to 32,000 yuan. The economic value is high and the benefits are significant. At the same time, rationally implement comprehensive technologies such as water and fertilizer regulation and pest control, and produce a batch of fruit with an average single weight of 13 grams or more. The appearance is beautiful and the quality is excellent. The fruit that is comparable to the imported “red†is put on the market and has been consumed by the majority. Favorite.
In terms of fertilization technology, Tianzhu summed up the “ground and underground grasping, organic and inorganic sharing; pre-stage nitrogen fertilizer, medium-term nitrogen and phosphorus cooperation, late phosphorus and potassium addition; re-application of organic fertilizer, with inorganic fertilizer; nitrogen, phosphorus, potassium and trace elements Reasonable combination, the use of solid liquids alternately, the main application of rhizosphere fertilization, supplemented by foliar topdressing, small seedlings and less diligence, large seedlings on time to apply the fertilization experience.
First, the base fertilizer
Before planting, a large amount of farmyard manure and phosphate fertilizer should be applied as a base fertilizer at one time, and the fully decomposed manure (preferably sheep manure or chicken manure) can be applied to 3,000 kg to 5000 kg and 150 kg of superphosphate. Ditch 80 cm wide and deep along the planting line (deep soil and topsoil are piled up separately), first fill a layer of 15-20 cm straw, leaves or raw sheep manure at the bottom of the ditch, and then use deep soil and A small amount of fertilizer is filled into the deep layer, topsoil and a large amount of fertilizer are filled into the surface layer, and superphosphate is applied to the soil layer 10 to 15 cm from the ground.
After planting, a certain amount of base fertilizer should be applied every year from the second year. Generally, after harvesting the grapes, along the side of the planting plant, 40 to 50 cm away from the seedlings (which can be extended outwards later), the fertilization ditch with a width of 30 cm and a depth of 60 cm is excavated, and the fully decomposed organic fertilizer is used with the excavation. 5,000 kilograms of mu and mixed with calcium phosphate per 200 acres per mu.
Second, topdressing
1. Rhizosphere fertilization: seedlings planted in the same year, the first top dressing at the height of 30-40 cm of seedlings combined with irrigation at a distance of 20 cm from the plant 20 cm deep, each plant applying about 0.5 kg of urea; interval 15 days ~ 20 days combined with irrigation for the second top dressing: 30 cm from the plant, the depth of the hole is 5 to 10 cm, about 10 kg of urea per plant; after every 25 days to 30 days, the topdressing is 30-40 cm from the plant. Deep 5 ~ 10 cm, mixed with urea and diammonium phosphate, the plant is applied 15 ~ 20 kg; the last time can be mixed with diammonium phosphate and potassium nitrate or 30 kg of special fertilizer for planting fruit trees; for some weak seedlings, available Amino acid liquid fertilizer is irrigated, once every 15 days to 20 days, and even irrigated 3 to 4 times. Stop the topdressing 60 days before hibernation.
For a seedling of more than two years, a growth cycle should be followed by 5 to 6 times of chemical fertilizer, all of which are ditched and applied, and then covered with soil. The fertilization ditch is about 40 cm from the plant and 10 to 15 cm deep. For the first time, when the buds were swollen, the urea was applied 25 kg per plant; the second time was 10 days before the flowering, when the stalks were about 5 cm long, 25 kg of urea per plant and 75 kg of active organic fertilizer; the third time was flower After the grape granules are about the size of the mung bean, the amount of fertilizer is slightly larger than the second time; the fourth time is applied when the diameter of the grape is about 1 cm, the amount of fertilizer is the same as the third time; the fifth time is applied when the grape begins to change color. Each plant applies 30-40 kg of diammonium phosphate and 75 kg of active organic fertilizer. It can also be combined with appropriate potassium fertilizer and trace element fertilizer. The sixth time, when the grape has 50% to 60% color change, it is applied. Potassium sulfate or potassium nitrate 30 to 40 kg. Plants with larger yields can increase the amount of topdressing appropriately.
2. Foliar topdressing: Foliar topdressing is carried out when the new shoots are 30 cm, about 6 to 7 leaves. It is sprayed with 0.3% urea + 0.5% amino acid liquid fertilizer leaf surface. In July, it can also be combined with disease prevention for foliar topdressing, and sprayed once every 10 to 15 days. According to the growth situation, 0.2% of boron, magnesium and zinc micro-fertilizer can be added. In the later stage, 0.2% potassium dihydrogen phosphate can be added for foliar spraying (without urea) to promote the maturity of various organs and accelerate the lignification of new shoots. Improve the quality of the fruit. Foliar topdressing should generally be carried out in the morning or after 3 pm, and open the greenhouse vent to prevent high temperature phytotoxicity. The focus is applied to the back of the leaf to facilitate absorption.
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