The quality of autumn asparagus management determines the level of output next spring. Therefore, whether it is the field of bamboo shoots planted in the year or more than two years old, it is necessary to grasp the autumn management of asparagus.
In spring this year, seedlings planted in July before the start of planting should be applied per acre in early September 500 to 1000 kg of humic acid organic compound fertilizer, nitrogen, phosphorus, potassium ternary compound fertilizer 15 to 25 kg. Combine weeding, cultivating soil by cultivating, timely watering, and promoting the growth of autumn stems.
Planting green asparagus for more than two years, after stopping shooting in August, remove diseased, yellow, dry, and old stems in time, which is of great benefit to the growth of autumn stems.
During the period from the summer to the equinox, the high temperature during the day, the low temperature at night, and the high photosynthetic efficiency of asparagus make it a period for the growth of asparagus bamboo shoots and a period of large storage of nutrients for asparagus roots. In this case, suitable top dressing should be used to increase the output of asparagus in spring next year. basis. Each mu of high-quality farmyard fertilizer 1000 to 2000 kg, or humic acid organic compound fertilizer 500 to 1000 kg, nitrogen, phosphorus, potassium ternary compound fertilizer 25 to 50 kg. Combine weeding for cultivating and watering in time.
White asparagus is generally allowed to grow naturally after harvesting in late June, and this practice has a great influence on the increase of asparagus production in the coming year. White asparagus should do a good job in autumn management, as well as the management of green asparagus to remove the sick, old, and yellow stems, and promptly apply fertilizer to promote the growth of autumn stems.
Whether it is white asparagus or green asparagus, autumn should leave 6 to 9 stems with diameters of 1 to 1.2 centimeters in the fall, and control the height of the topping at 1.2 to 1.4 meters, or piling, pulling the rope to prevent the mother stem from lodging, and increase. The field's air and light transmission capabilities prevent pests and diseases from occurring. Remove the grains on the female plant to avoid wasting unnecessary nutrients.
During the fertilization process, attention should be paid to the timely cultivation of the organic fertilizer after it is applied; the use of chemical fertilizer should grasp the principle of a small number of times, and pay attention to the reasonable ratio of nitrogen, phosphorus and potassium.
Asparagus will have its second peak of disease and insect pests every year from August to September. Whether it is colonization in the year or two years or more in the field of shoots, during the period of stem retention in the autumn, 50% of the reed net or 70% of mancozeb 800 to 1000 times per acre should be sprayed, and 20% of fast killing of dicamba 2000 should be used. - 3000 times liquid, spray once every 10 days, even spray 2 times, can prevent asparagus stem blight, brown spot and other diseases and cabbage caterpillar, negative mud insects and other pests.
Autumn can also be nursed before mid-to-late September. Local stems grow to more than three stems, and when the growth period is more than 60 days, they will be planted this winter or next spring. As long as the management is in place, summer bamboo shoots can be harvested next summer.
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