Pei County estuary, Qishan town and other towns in the adjustment of agricultural structure in the early spring cabbage, spring corn, autumn cauliflower, spinach high yield and efficient cultivation mode, can produce 4000 kg of cabbage per acre, 1000 kg of waxy corn, cauliflower and spinach 1500 ~ 2000 Kg, mu output value of 15,000 to 18,000 yuan, mu of pure income of 12,000 to 15,000 yuan. Due to low cost, technical difficulty, and high economic efficiency, it has been extended to 6 to 7 townships in western Zhangzhuang and Zhangzhai.
Early Spring Cabbage selected 8398, early-maturing, early-maturing, and early-maturity, bolt-on varieties. The seedlings were planted in the middle and late November and covered with three films. The seedbed nutrient soil is prepared with a matrix or fully cooked earth-fertilizer, and is disinfected with sodium propionate and thiram. The amount of seeds per acre of 50 to 60 grams, the need to bed 10 to 15 square meters, sub-bed 40 square meters. After pouring enough water to sow, cover the nutrient soil and toxic soil cover mulch. The seedbed temperature is maintained at 25 to 30°C during the day and around 15°C at night. 60% of the seedlings were uncovered and the mulch was uncovered. The seedlings were transplanted into the nutrient pods at the 2 to 3 leaf stage. Can also be broadcast directly into the 54 to 70 hole plug. After emergence, timely watering, ventilation, prevent rape seedlings. Seed bed temperature can not be lower than 5 °C for a long time to prevent vernalization convulsions. In late January, the seedling age is 60 days, the seedling height is 15 cm, and 6 true leaves are planted. The spacing is 40-45 cm, the plant spacing is 35 cm, and 4200-4700 plants are planted per acre. Before planting, 4,000 kg of organic fertilizer was applied per mu, 50-60 kg of ternary compound fertilizer, and 20 kg of urea. One week before colonization, the temperature of the membranes was elevated and no ventilation was provided within 10 days after colonization. After easing the seedlings, they should be properly ventilated and watered, applying 15-20 kg of urea per acre. After planting, keep the greenhouse temperature above 25°C during the day and 8～15°C during the night, and do not keep it below 5°C for a long time to prevent premature vernalization. Persimmon application of 15 to 20 kg of urea per hectare, timely watering after fertilization. Pay attention to the control of downy mildew and black rot, combined with the prevention of spraying foliar fertilizer. The market was harvested at the end of March and early April.
Spring waxy corn was selected as Wanhao No. 1 early maturing cultivar, sowing seedlings in early March, seedling age of 25 to 30 days is appropriate, leaf age of 3 to 5 leaves. The temperature at the time of sowing is relatively low, and the seedlings can be planted in arches and covered with grasshoppers at night. Put the nutrient soil into the plug or nutrient bowl, soak 1 grain per pod, properly ventilate after emergence, and consolidate the seedlings 1 week before transplanting. After the cabbage is harvested, timely fertilization is required. Because the upper pod is rich in fertilization, organic fertilizer may not be applied, and 50 kg of ternary compound fertilizer and 20-25 kg of urea may be used per mu. Planting at the beginning of April, spacing 60-65 cm, 30 cm spacing, 3600 plants per acre. Planting mulch after planting, dregs 3 to 4 days to promote slow seedlings. Relieve seedlings for timely ventilation and cultivating. The large bell-mouth period applies 30-40 kg of urea per acre. After the temperature rises in late April, the film is removed. Watering in the late growth stage. After heading, 2 to 3 times of potassium dihydrogen phosphate solution was sprayed to conduct artificial auxiliary pollination to make the grain plump. In early spring, the incidence of corn diseases and insect pests is low, and when there are aphids, it can be controlled by imidacloprid. In mid-to-late June, female flowers were harvested 20 to 25 days after pollination. Waxy corn seedlings transplanted mature 15 to 20 days earlier than live broadcast, can increase income more than 30%.
Autumn cauliflower selection of Taiwan Friends of heat 46, Fenghua 60, Toyota 50 and other heat-resistant, early maturing varieties, sowing in late June, seedling age 25 to 30 days, leaf age 5 to 6 leaves. Seedlings were inoculated with substrates and plugs, and the substrates were sterilized with carbendazim and sodium propionate. After sowing, cover 5 grams of disinfected nutritious soil per square meter, cover film and shade net, and remove the cover after the seedlings are hatched. Before the site preparation, 2000 to 3,000 kg of organic fertilizer was applied per mu, 40 to 50 kg of ternary compound fertilizer, 10 to 15 kg of urea, and 1 kg of borax. In the middle and late July, sorghum planting will be carried out. The plant will be 70-75 cm wide and 25-30 cm wide. Each row will be planted in 2 rows with a spacing of 50 cm and a spacing of 40 cm. Planted 3300 plants per acre. After easing the seedlings, 10 kg of urea should be applied per acre, and 15-20 kg of urea should be applied per acre before the seedlings. Spray 2 to 3 foliar sprays before and after the ball. Note prevention of soft rot, black rot, cabbage caterpillar and beet armyworm. Harvested in mid-September.
Spinach is made from Japanese big leaf spinach and sown in late September. Spinach has a shallow root system, a short growth cycle, and generally no fertilization during the growing season. Before ploughing, 2,000 tons of composted manure per acre, 40–50 kg of high-nitrogen compound fertilizer, 30–40 kg of urea, and 2 kg of 5% chlorpyrifos granules per acre were used to control underground pests. Early autumn spinach grows fast, the density can not be large, with the amount of 6-7 kg per mu. Sowing before the broadcast of 2 to 3 days, soaking with cold water for 10 to 12 hours, spread after sowing. After sowing the soil, spray trifluralin to seal the soil. Pay attention to the prevention of downy mildew and aphids. Harvested 30 days after sowing, harvesting was completed before and after mid-December.
At present, the heat metering market commonly used heat table is divided into mechanical heat meter(mechanical energy meter) and ultrasonic heat meter(ultrasonic energy meter).Heat energy meter is suitable for measuring the heat exchange, known as the heat transfer fluid or liquid absorbing thermal energy conversion equipment, which consists of a flow sensor, temperature sensor and heat calculator three parts. Heat energy meter (thermal meter), also known as Heat Meters, heat energy calculator, both measure heating system for heat and also measure heat absorption cooling system.
Heat energy meter (heat meter) is used to measure and display the water flow through the heat exchange system release or absorb heat. Heat energy meter, is also known as energy meters. The heat energy meters are installed at the inlet pipe or outlet pipe to measure accurate metering and intelligent control of charges of the heat consumption. Its working principle is to install heat energy meters in the heat exchange system, when water flows through the system, according to the supply and return water flow temperature, from the data from the flow sensors and temperature sensor as well as the water flow time, the heat energy meter will calculate the released and absorbed energy through the calculator.
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