How to manage strawberries in autumn

1. Apply sufficient autumn fertilizer. Strawberry root system is shallow, more sensitive to fertilizer response, therefore, should not apply ammonium bicarbonate and ammonium sulfate and other chemical fertilizers, should be urea and compound fertilizer mainly; after the autumn equinox topdressing compound fertilizer 25 kg per mu, to promote flower bud differentiation; winter fertilizer can be applied in the late autumn furrow, fertilizer to fully decomposed human excrement mainly, to improve the winter ability of plants.

2. Topdressing outside roots. Topdressing can increase photosynthetic intensity of strawberry leaves, promote root development and increase fruit yield. Usually combined with spraying, foliar spraying can be 0.3%~0.5% urea, 0.3%~0.5% potassium dihydrogen phosphate, 0.03% manganese sulfate, 0.01% ammonium molybdate, plant treasure element and other organic nutrient solutions.

Third, less irrigation to prevent stains. In autumn, less irrigation is needed to prevent strawberry stolons from growing vigorously and consuming a lot of nutrients, affecting soil fertility. At the same time, attention should be paid to clearing ditches and draining water, reducing soil moisture and preventing waterlogging.

4. Cultivate the soil and cultivate. The occurrence of new roots of strawberry has the characteristics of upward movement year by year. Therefore, after one year of strawberry growth, attention should be paid to the basal part of the soil, mainly before the emergence of new roots, the thickness of the soil to expose the seedling center is good. Intertillage can be combined with topdressing, cultivating soil, root growth exuberant and growth before intertillage can be appropriately deepened.

5. Weed control. Weeding in the field can be carried out by comprehensive measures such as manual weeding, mulching and grass pressing, crop rotation and crop rotation. In order to reduce labor, herbicides such as 48% trifluralin EC, 40% simazine colloidal suspension or 10% diclofop-ethyl EC should be used as the main herbicides.

VI. Prevention and control of diseases and insect pests. If autumn rain is much and field humidity is high, strawberry disease is easy to occur. There are mainly gray mold, leaf spot disease, verticillium wilt, virus disease, bud blight, powdery mildew, etc., which can be controlled by spraying 200 times Bordeaux mixture or 50% carbendazim 600 times solution or 65% zinc wettable powder 500 times solution; virus disease is mainly caused by aphid virus infection, and aphids can be controlled by spraying 10% imidacloprid 1000 times solution; To cutworm, white grubs, mole cricket and other pests can be used 1000~1300 times solution phoxim irrigation or 2000 times solution trichlorfon spray kill.

7. Covering straw. Late autumn to strawberry old leaves protection is good, is advantageous to plant's nutrition accumulation, the inflorescence differentiation. Generally, after irrigation in the first and middle of October, the straw is covered in time for about 30~50 cm in late October. When the average temperature of the second year stabilizes at about 10℃, the winter mulch begins to be removed, and all of it will be removed in late March. Do not break the strawberry flower bud when operating, can use bamboo pole to wait along strawberry furrow, will cover gently pick open.

Jia Youjiang, Agricultural Bureau of Juancheng County, Shandong Province