The recent strawberry management focuses on powdery mildew and gray mold and smut in pest control.
1. Powdery mildew 1. Sulfur fumigation: Install a fumigation machine in every 80 to 100 square meters in the shed. The fumigation device contains 20 grams of sulfur powder with a content of 99%. After fumigation in the evening greenhouse, the fumigation begins. Once every other day, each 4 hours. The fumigation device is suspended 1.5 meters above the ground in the greenhouse. To prevent the sulphur gas from hardening the shed film, an umbrella waste film can be set above the fumigation device to protect the shed film. 2. Emitting aerosols: After the greenhouse cover is closed in the evening, add 2% of mycelia or 20% of chlorothalonil to each greenhouse (specification 50m 8m) 6 pieces (placed along the ditch). After being lit from the inside to the outside, people quickly evacuated from the warm room. 3. Foliar spraying: 1000 times of 70% thiophanate-methyl, 50% of 50% carbendazim (tribecide), 2000-3000 times of 25% pyraclostrobin EC (?P Run), 600~800 times, 600~800 times of tetrafluoroether azole. The above-mentioned several kinds of drugs were sprayed continuously for 2~3 times, and the spraying interval was 7~10 days, and they were used alternately.
Second, gray mold 1. Aerosol release: In the evening greenhouse cover closed, 20% chlorothalonil smoke agent or 15% iprodione. Fumei double smoke 4 to 6 pieces / shed evenly placed (Shun ditch lying ) After being lit from the inside to the outside, people quickly evacuated from the warm room. 2. Foliar spraying: 1000 times of 70% thiophanate-methyl, 25% of 1500 times of 25% amidoxime suspension, 800 times of 50% of fast-acting powder, 50% of boscalid dispersible granules (?P Ze) from 2000 to 3000 times, according to the days of 600 to 800 times. The above-mentioned several kinds of drugs were sprayed continuously for 2~3 times, and the spraying interval was 7~10 days, and they were used alternately.
Third, the prevention and control of earthworms This year due to high temperatures in winter, drought, resulting in the occurrence of heavy earthworms, the prevention and treatment of drugs can use 40% isoprene Weifen. Pay attention to product safety: When using pesticides to control pests and diseases, we must pay attention to the safety interval of pesticides. In the picking period, we must use drugs after fruit picking. The general bactericide safety interval is 7 days, and the insecticide safety interval is 14 days.
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