Kate apricot simple plastic greenhouse cultivation technology

Kate apricot simple plastic greenhouse protective cultivation mature period 30 to 40 days ahead of open cultivation, economic benefits increased 15 to 20 times.

1. The structure of a simple plastic greenhouse The built greenhouse is a north-south arch-shaped greenhouse with a span of 10 meters and a length of 60 meters. The maximum height of the greenhouse is 2.5 meters and the height of the shoulder is 1.5 meters. Reinforced cement columns were used as the columns, and bamboo rafts were used as arches and cantilever beams. A total of 5 rows of columns, the main column between the lines of 2.5 meters. The distance between the vertical columns is 1 meter, and the distance between the vertical columns is 3 meters. A suspension beam was placed above the middle three rows of columns and a 20 cm suspension column was placed on the suspension beam every 1 meter between each column. The arches are erected on the side columns and hanging columns every 1 meter. There is no drip film for the greenhouse membrane, and the web film and web are pressed against each other. In the center of every 2 arches, it is pressed by a laminating line, and when the ventilation is made, a gap can be opened at the pressure of the two sheds on the shoulder of the shed.

2. Cultivation and management techniques Soil conditions The test site is a sandy loam with a good drainage and irrigation system, with an organic matter content of 0.60% to 0.78% and a pH value of 7.1 to 7.3.

The main cultivar of the varieties was Kate apricot, and the pollination tree was Italian No. 1 with a ratio of 5:1.

The planting density is planned to be planted densely. When planting, the plant spacing is 1.0 meter and 2.5 meters. With the continuous expansion of the canopy, when the canopy is closed, the thinning of the separators becomes a plant spacing of 2.5 meters.

Pruning chooses a small trunk sparse or naturally happy tree. For management convenience, the dryness can be properly raised, but not more than 50 cm. Select 3 to 6 strong branches as the main branch. The height of the tree should be controlled 30 to 35 centimeters below the shed film. Pruning dominates the growing season. Before sprouting, reasonable dents and bruises were made on the missing branches. The buds and back shoots were wiped off in a timely manner in the bud stage, and the main branch or large branch group with an angle of less than 60 to 70 was drawn. When the new shoot grows to 15 to 20 centimeters, it cuts the tip in time to limit the growth and improve the illumination of the tree. After fruit-picking, drooping branches, dense branches, cross branches and overlapping branches were removed, and the weak branches were retracted. The branches continue to open in the fall, and take a long shot of the autumn shoots to promote the ripening of branches. In winter, light shearing is mainly used to eliminate dense branches, diseased branches, thin and weak branches, and the retraction is too high. If the long fruit trees are longer than 50 centimeters, the long fruit trees should be short, and the short and medium fruit trees are not short. .

The appropriate time for the buckle shed and uncovering time is in late December. At the end of April, the average temperature reached 15°C and the fruit was nearing maturity.

Temperature management: 20-30 days before the shed is covered with a tree disc, so that the ground temperature after the shed can maintain a high level of water, avoiding adverse effects of high temperature and low ground temperature on the growth of the tree. Generally 20 to 30 days before the shed is covered with plastic film, so that the temperature of the soil in the early period after the shed can be increased by 2 to 3°C. The temperature of a simple plastic greenhouse requires germination 10-20°C, flowering 12-23°C, young fruit 15-24°C, fruit enlargement 12-28°C, fruit ripening 22-32°C, temperature adjustment can be uncovered Grasshoppers and opening and closing vents to achieve.

After soil and fertilizer water and humidity management sheds, 0.5 to 1 kg of nitrogen, phosphorus and potassium ternary compound fertilizers were applied to each plant, and sufficient water was poured at the same time. The tree crown was sprayed with 5% urea to increase the nutrient level of the tree and the relative humidity in the shed. Spraying 0.3% borax during flowering. After fruit set, hard nucleus stage and fruit enlargement period, it was sprayed with 3 times of active bio-organic fertilizer, which enhanced stress resistance, increased fruit setting rate, and reduced physiological fruit drop. During fruit enlargement, 0.2 to 0.25 kg of potassium per potassium sulfate was applied in combination with watering to increase fruit size and fruit quality. In August and September, 50 kg of organic fertilizer was applied to each plant to improve the physical and chemical properties of the soil and increase the storage and nutrition of the tree.

Flower and fruit management

1 artificial pollination. The relative humidity of the air in the greenhouse is large, the pollen is not easy to spread, pollinating insects are few, and the natural fruit set rate of Kate apricots is low. Therefore, artificial assistant pollination should be performed. After flowering, 8 to 11 am every day, the flowers can be given by brush.

2 Strict fruit thinning. If Kate apricots are too fruity, the tree vigor can easily weaken. The amount of fruit should be determined according to the tree age, tree vigor and the results of the branches and strengths, generally long fruiting branches to stay 3 to 4 fruit, fruiting branches 2 to 3 fruit, short fruiting branches 1 to 2 fruit or leave no fruit. Fruit thinning usually takes about 20 days after flowering.

Application of Growth Regulators Because of the high density and rapid growth of Kate apricots in plastic greenhouses, the key to conservation cultivation is to promote flower growth. Paclobutrazol is better for controlling the crown. Using the method, young Wangshu sprayed 15% paclobutrazol 300 times twice in mid-July.

Five degrees of lime sulfur was sprayed one week after the larvae of the disease and pest control, and three degrees of lime sulfur was sprayed before the bud to prevent overwintering pests and diseases. In the flowering period of the bell, it was once sprayed once to clean the nymphs, eliminating maggots and red spiders. In the growing season, depending on pests and diseases, spraying

1 to 2 times insecticide and fungicide can be.


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Sweet Potato Leaf Juice Vermicelli Bag

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