Shangyu is the production of Xiazizi, which can be used for spring mulch cabbage, spring radish lettuce, and spring mulch potato. Production technology points: First, the choice of species. Choose the medium-sized scorpion cultivar that has a straight green body and a green mid-white scorpion. Second, nursery. The nursery is carried out 45 to 50 days before harvesting. Choose a 10 cm 10 cm nutrient bowl, put the nutritious soil that has been prepared in advance into the pot, and fill it in a well-drained plot after 7-8 minutes, and then soak the seeds with water for 12-18 hours. Put it inside. Two seeds should be placed in each nutrient bowl, and cover soil 1 to 1.5 centimeters thick. Water the pot thoroughly and then cover the plastic film to increase the temperature and moisture. After about 10 days, most of the seeds were unearthed and the mulching film was removed. The seedling age is about 50 days, and when the seedlings grow to 4 to 6 leaves, they can be planted. Third, colonization. When the site preparation is combined with deep turning, apply 3 to 4 cubic meters of organic fertilizer that is fully decomposed to the mu, and make the earthworm flat. Plane with a hoe, plant spacing 40 cm, spacing 90 cm, acres of planting about 1800. Three-element compound fertilizer 15 kg per mu were applied before planting. When planting, gently squeeze the bottom of the plant and plant it to avoid injury. Watering in time after planting. Fourth, management points. After watering the seedlings, the cultivator shall be ploughed in time. When the scorpion grows to 20 centimeters in height, it is inserted in time. Since the scorpion frame is more important than other sturdy vegetables, the splicing frame should be more reliable. After the vine spreads on the shelf, pay attention to the vines, wait until the scorpion grows to 70 centimeters in length, timely tip the cusp, and each side branch should be tipped when it reaches 3 to 4 leaves. Fifth, pest and disease control. The main disease of rice dumplings is powdery mildew, which mainly damages the leaves. Can be used 15% triadimefon 600 times or 600 times Antler spray control. Insect pests such as cabbage caterpillar and soybean meal can be controlled by 4.5% cypermethrin 1000 times solution and 1.8% avermectin 2000 times solution spray. Digital 60m short range laser rangefinder is a laser measurement device which is supposed to replace tape measure, ruler, and other traditional length meauring tool. Laser ruler as its name, it is a electronic ruler which user laser to measure distance. 60M Laser Measure，60M Laser Distance Measure，Laser Distance Measure Oem，60M Digitial Laser Distance Measure Chengdu JRT Meter Technology Co., Ltd , https://www.cdlaserdistancesensor.com
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