How to manage summer asparagus?

How to manage summer asparagus? Please guide asparagus management has entered the spring mother stem retention stage, keeping the spring mother stem and cultivating strong mother plants is the key to high yield and high quality of asparagus in summer. The main technical measures of keeping the spring mother stem are as follows: the appropriate time to keep the spring mother stem: the time of keeping the spring mother stem should be carried out according to the year of asparagus growth. Asparagus with few spring shoots and 1-2-year-old asparagus should be kept around April 25 to the end of the month; spring asparagus is normal, 3-year-old asparagus should be kept in early May. The number of female stems, 2-year-old asparagus, 3-year-old asparagus, 3-year-old asparagus, 4-year-old asparagus and 4-year-old asparagus. Generally choose a solid stem with a diameter of 1.2cm to keep the mother stem. Soil disinfection: perennial asparagus is generally contaminated by bacteria, which is the source of stem blight and other diseases, so we must pay attention to soil disinfection. Generally, five days before leaving the mother stem, 40% asparagus green powder 600 times solution was used to sprinkle the plant plate and the surrounding soil, in order to kill the bacteria in the soil, reduce the base of the disease, and protect the mother stem from its damage. Disease prevention and stem protection: when the retained spring mother stem grows to 5 cm high, that is, the stem is coated with 40% asparagus green powder 50 times solution, once every other day, for 4 times; after the mother stem is branched, it is sprayed with 40% asparagus green powder 200ml 300 times solution, once every 2 days, for 4 times in a row After releasing the leaves, spray 40% asparagus green powder 400 Mel 600 times, once every 5 days in the early stage, and 7 days in the later stage, until the spring mother stem matures at the end of June. In the future, depending on the growth of the mother stem, it will be sprayed again every 10 seconds and 15 days. If you encounter rainy weather after painting or spraying, make up the painting and spray once after the rain stops. Increase the application of base fertilizer: the spring mother stem remains to grow up, and after it begins to shoot, it should be applied organic fertilizer in time. Apply 1.5 tons of mushroom residue or rotten fence fertilizer, 5 kg of compound fertilizer or 10 kg of urea, 7 kg of potash fertilizer and 5 kg of phosphate fertilizer per mu. Topdressing began in late June. In the early stage, it was applied every 15 days, and in the later stage, it was applied every 15 days. Each mu applied 8 kg of urea, 5 kg of potash fertilizer or 10 kg of compound fertilizer. During the interval of topdressing, spraying asparagus branches and leaves at 8: 00 am or in the evening with foliar fertilizer such as "brassin" can enhance photosynthesis, improve resistance and increase the yield of asparagus. Supporting management: in the middle and later period of asparagus harvest, when it is the season of plum rain and high temperature and drought, we should pay attention to waterlogging and moisturizing. Dredge drainage in case of waterlogging, remove stagnant water, ploughing and weeding in time after rain to prevent topsoil consolidation; timely irrigation of horse water in case of drought to keep the soil moist, so as to improve yield and quality. At the same time, often cut off the inverted withered and yellow mother stems and some dense branches to keep the bamboo shoot garden ventilated. After late August, the emergence of bamboo shoots decreases and the mother stem is withered and yellow, so we should stop harvesting, do a good job in clearing the garden, and enter the autumn mother stem retention management stage. Click to get more asparagus planting techniques click to get more vegetable planting techniques