Spring Flowers Common Pests

Spring flowers have more pests and diseases. In April and May, the following are the more serious ones: Aphids (grasshoppers), hibiscus, peach, hibiscus, Chinese rose and honeysuckle are all vulnerable to aphids. As the temperature rises, it becomes more and more serious. Early detection and prevention must be done.

Control methods: 1 spray 50% of imidophos, 1500 to 1500 times the water; 2 a small amount of potted flowers can spray 70-100 times the neutral detergent.

The spider mites, such as red spider Jasmine, hibiscus, asparagus, rose, dahlia, etc., mostly come from early April. Control methods: A small amount of potted flowers can often be rinsed with tap water, or on the back or sprayed or simmered with 100 to 150 times the batter water that has been boiled and cooled. After one or two days and then washed with clean water, it can receive significant results.

The scale insects (Magnolia officinalis) of Magnolia officinalis, Rose, Cyclovirobuxine, and Pittosporum were mostly hatched from mid-April to mid-May.

Prevention methods: 1 artificially gently brush the body before hatching; 2 Qin inspection, blight when the temperature is more than 20 degrees Celsius, the new sowing or autumn sowing of flowers, saplings, and some easy-rotten flowers, If soil moisture is high, blight easily occurs. Control methods: 1 Before planting, use 70% of the soil per acre of chlorobenzene 3-8 kg, evenly mix in the soil; 2 Control in the young period Watering, do not make the soil too wet, 3 when the diseased seedlings were found at the beginning, watering 1% of ferrous sulfate, are 4-8 pounds of water per square meter.

Rust sea locust rust is easily infested after April and May rain: rose rust is infested when the roses are in bloom; prevention and control methods: 1 rose disease in time to germinate the yellow sprouts germinate in time to burn and destroy the source of infectious diseases; 2 Spraying 15% triadimefon in the initial infection period, watering 700 to 1000 letters, the effect is obvious.

Powdery mildew rose, Impatiens balsamina and Scutellaria powdery mildew are mostly infected in May and June, and yellow leaves, dead leaves, and tender shoots are easily caused in summer. Prevention methods: 1 pay attention to the ventilation of flowers; 2 less nitrogen fertilizer, apply more phosphorus and potassium fertilizers; 3 spray a 15% of the time of the initial infestation Triadimefon, watered 700 to 1000 times.

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