Strengthening spring management of open strawberries is the key to promoting strawberry early results, high quality, and high yields. The measures are as follows:

When the average temperature of the cold-proof cover is about 10 ° C on the day of removal, the cold-proof cover on the strawberry seedlings can be gradually removed. Be careful not to break the flower buds. If it is covered with a thin film, when removing the film, do a good job of refining seedlings to prevent sudden excessive temperature differences that affect strawberry growth and development.

After cultivating the old leaves in time, you should start cultivating the weeds in time, but it should be shallow during cultivating, prevent soil blocks from overwhelming the seedlings, and clear the drainage ditch. Remove to prevent transmission.

Quickly fertilize and promote early dormancy through a winter dormancy. After the spring, the temperature rises and strawberries begin to grow. Topdressing in time can promote the early growth of the plant, form new foliage as soon as possible, increase the number of effective flowers, and increase the fruit setting rate. Because the strawberry has a shallow root system, it is sensitive to fertilizer reactions and is prone to fertilizer damage. To avoid the use of ammonium carbonate and ammonium sulfate, urea, compound fertilizer or human feces should be the main source. The amount used should be controlled with 5-6 kg of urea per mu, 1000-1250 kg of human feces, 10-15 kg of compound fertilizer, and watering once in combination with fertilization. Foliar spraying with 0.2% potassium dihydrogen phosphate solution once or twice during flowering and fruiting period has a good effect on improving quality and increasing yield.

Watering should be done in small quantities to keep the land moist. After entering the fruit maturity period, water should be properly controlled. During drought, small water should be poured in the evening after each fruit is harvested, and not flooded with large water, otherwise it is easy to be infected and cause a lot of rotten fruits.

After the inflorescences are drawn on the new stems of strawberry with thin flowers and thin fruits, generally there are 10 to 30 flowers per inflorescence. There are too many flower buds, insufficient nutrient supply, weak growth, and small and abnormal fruits will increase. Therefore, thinning flower buds should be thinned out after budding, and flower thinning should be carried out again during the flowering period, so that nutrients can be supplied to large flowers, fruit set rate and single fruit weight should be increased, and flower buds should be thinned out. It is advisable to leave 3 to 5 inflorescences.

After the fruit is set and the strawberry is set, the ears will sag as the fruit grows, and the wheat straw should be used to cushion the ears in time to prevent the fruit from contaminating the ground or rotten fruit. When the fruit surface is 2/3 colored, harvest it in time. The harvest should be done after the morning dew is dried. Do not touch the pulp with your hands when picking. Gently pinch the fruit stalk, take a part of the fruit stalk and remove it into a clean container. , Graded, sold or processed immediately.

Prevention and control of pests and diseases: Viral diseases, powdery mildew, gray mold, brown spot, and underground aphid pests.

1. The fundamental measure for viral diseases is to apply virus-free vaccines to eradicate aphids. Spray 1.5% of Phytosperm Emulsion 1000 times solution or 83 times of anti-infection agent 100 times solution at the beginning of the disease.

2. Powdery mildew spray mist with 2,000 times liquid of 12.5% ​​nitronitrile EC or 1000 times liquid of 20% powder rust rather wettable powder.

3. For gray mold, use 50% Nongli Ling wettable powder 800 times liquid or 50% Sukeling wettable powder 1000 times liquid for mist spray.

4. Brown spot is sprayed with 200% solution of 2% agricultural anti-120 water agent or 500-1000 times solution of 50% methyl tobzine.

5. The aphids are sprayed with a 50% antiacarb-wettable powder 2,000 times or a 10% imidacloprid wettable powder 1500-2000 times.

6. Underground pests such as pupae and maggots, use 80% trichlorfon wettable powder 200-250 grams or 40% phoxim EC 200-300 grams per acre, and irrigate roots or irrigate with 500-750 kg water. Note that the medication should be stopped 15 days before fruit picking to prevent poisoning.

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