Strawberry in the near future to prevent four diseases
In spite of the recent drop in temperature, the greenhouses in greenhouses under plastic greenhouse insulation are still relatively high in humidity, which often leads to the occurrence of grey mold and powdery mildew. At the same time, it is also caused by blight and black mold. Greatly reduce the quality of fruit, if not prevent and control in time, often reduce the production of strawberries, income will also drop substantially.
The common denominator of these diseases is that they are continuously planted and the soil is easy to infect diseases; the second is that the temperature is relatively high and the conditions are high. Therefore, according to their characteristics, prevention and control should be started from two aspects: agricultural measures and chemical control.
Agricultural control
The first is the rotation of dry and dry crops, continuous cropping generally can not exceed two years; the second is to improve the water conservancy facilities, so that can row, can irrigation, energy filter, to promote healthy and healthy strawberry root; Third, scientific formula fertilization, avoid partial nitrogen fertilizer; Closely and properly planted to prevent shading; Fifth, to completely eliminate and destroy the diseased plants.
Chemical control
For gray mold, one can use 10 ml of 10 ml, 10 ml against fresh water; second, use 3% of oxygen to clear 600 to 800 times liquid; third, use 50% of Kelon 800 times; four is available. % Thiophanate-methyl 800 times; 5 is available 75% chlorothalonil wettable powder 600-800 times. For powdery mildew, one can use 3% polyoxygenase 600 to 800 times; 2 can use 25% triadimefon 3000 to 4000 times; 4 can use 70% thiophanate-methyl 100 times; 5 can use 30% of Teflon 5000 times liquid. For blight, one can use 10% multi-resistant antibiotics 1000 times; two can be used 10% solution dry Suspension 300 times; three available enemy Dan Dan 800 times. For black mold, one can use 200 times Bordeaux mixture; two can use 27% high-fat film emulsion 80 to 100 times; three can use 2% Wuyimycin agent 200 times. The above bacterial agents are sprayed once every 7-10 days, which can be used in combination with the actual conditions of the local area.
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