Facilities management technology after plum tree shed

One, buckle shed warming. Lishu usually warms up in mid-December. At this time, we should gradually uncover the veil, first 1/4, 1/3, 1/2, after all 4 to 6 days. The temperature in the shed is mainly regulated by opening and closing the vents and covers, and uncovering the straw curtains. From the dormant period to the budding stage, the highest temperature control in the shed is at 20°C during the day and the lowest temperature is between 1°C and 3°C during the night. The budding temperature should be controlled at 10 °C ~ 15 °C, the most suitable temperature is 12 °C ~ 14 °C, the maximum temperature during the day should not exceed 20 °C, the night temperature of not less than 3 °C. During the flowering period, the outside night temperature is relatively low. At noon, the temperature in the shed room is high, requiring special attention from the managers. In this case, the daytime temperature should not exceed 20°C, and the nighttime temperature should not be lower than 6°C. During the young fruit period, the maximum temperature cannot exceed 22°C, and heating at night when the temperature is lower than 8°C. The fruit enlargement period is controlled between 23°C and 26°C during the day, and the night temperature is controlled between 10°C and 15°C. During the mature period, the daytime temperature can be maintained at 25 °C ~ 26 °C, can not exceed 30 °C; at night can open the skylights and windows to use the natural low temperature to reduce the temperature, the plastic film is also semi-covered and exfoliated.

Second, control the humidity. Li Shu requires different relative air humidity at different growth stages. The germination period is about 80%, the flowering period is 45% to 65%, the fruit growth period is 60% to 70%, and the mature period is 50% to 60%. Anti-high humidity measures: cover the ground, or spread rice straw, wheat straw, wheat straw, etc. between the rows.

Third, new shoot management. After germination, first remove the buds that are not properly planted. After fruiting, in order to avoid competing for nutrition with the fruit, when the new shoot grows to 15 to 20 centimeters, it repeatedly picks up the heart to promote secondary branches and expand the canopy. At the same time sparse erect branches, dense branches and fruitless branches to improve light conditions and promote flower bud formation. 4 to 6 weeks after fruit picking, the fruiting branches were rejuvenated and the shoots were cut short.

Fourth, regulate lighting. Timely cover opaque cover. Under normal circumstances, the indoor temperature after demolition will drop by 1°C to 2°C. After about 10 to 20 minutes, the room temperature will begin to rise. This will make it easier to expose the room. If there is no temperature drop after the exposing, direct rise will indicate late. The time for covering in the evening is determined according to the temperature requirements of different growth periods. Clean the film surface in time to increase the light transmittance of the film.

Fifth, adjust carbon dioxide. In the morning, they do not release air to maintain the concentration of carbon dioxide formed overnight; adequate organic manure is used to supplement the carbon dioxide by their decomposition; 4 kg of fully-fermented pure manure is applied per m2 of soil in the greenhouse every year, and the indoor carbon dioxide concentration can be stabilized for a long time. 0.07% to 0.08%.

Six, auxiliary pollination. Methods of assisted pollination include artificial pollination, pollination, bee pollination, and the like. When the shed has been configured with suitable pollination varieties with the same flowering period, point energizing guarantees a higher rate of fruit set, but it is more labor-intensive, and it can also be used for feather pollination or for pollination during the flowering period. Place 1 to 2 boxes of bees in each acre room. Bees can move in the range of 12°C to 30°C, pollination efficiency is high and labor is saved.

Seven, thinning fruit to stay fruit. The reasonable thinning of fruit trees in the greenhouse is beneficial to the concentration of nutrients and the reduction of ineffective consumption, thereby increasing the number of fruit, improving the coloring and inherent quality, and increasing the value of its products. When thinning the fruit, first sparse and produce fruit, malformed fruit, and retain the normal fruit. 3 to 4 long fruit branches, 2 to 3 middle fruit branches, and 1 to 2 short fruit branches. The outer and upper parts of the plum tree should have more fruit and the inner part should have less fruit.

Eight, prevention and treatment of pests. 1 Before planting, use

K84 biological pesticide 30 times liquid immersion root disinfection, prevention and treatment of root cancer. 2 Before spreading leaves after planting, when the seedlings sprout, use 20% to wipe off the net EC 1000 to 1500 times, or 50% of the special wettable powder 800 to 1000 times to spray the cloth, which can effectively control the overwintering aphids and the chafers Such as has a good repellent and control effect. After leaf spreading, combine the foliar application with spraying a mixture of 70% mancozeb 800 to 1000 times and 50% carbendazim WP 1000 times every 10 days to prevent disease and protect the leaves. When the fungicide is sprayed, such as aphids and moths, it can be mixed with 20% annihilation net emulsion 1000 to 1500 times liquid; if spider mite occurs, it can be mixed with 15% fluorenone EC from 2000 to 2500 times. 3 When buckled, use Baume 3 to 5 degrees lime sulfur, or 20% to quench the net emulsion 1000 to 1500 times liquid + 40 Fumei Lan wettable powder 100 times evenly spray dried branches, can effectively kill the wintering germs And eggs. 4 After the Li Guo dislocated, combined with foliar fertilizer, spraying a mixture of 70% mancozeb WP 1000 times and 50% Carbendazim WP 1000 times every 10 to 15 days to prevent and control. Perforation and so on.

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