Rice blast Diseases The susceptible fields, the frequently-occurring areas, the high-yielding fields, the multi-fertilizer fields, and the early stage saplings are listed as key points for prevention and control. Grab the first dose of medicine from the end of the booting stage to the beginning of the break (10% of the break), and then apply the second medicine as appropriate according to the weather changes and the development of the disease in the heading stage. Use 20% tricycloazole wettable powder 75-100g per acre, or 40% Fuji No. 1 wettable powder 100g, or 30% rice bran emulsifiable concentrate 150ml, add water 60-75kg conventional spray or add water. 5 to 10 kg of low-volume spray.
When the rate of diseased plants at the booting stage is 30% to 40%, use 5% Jinggangmycin water 100-150 ml or Jinggangmycin high-concentration powder 25 g per acre, add 100 kg of conventional spray or add 400 kg of water. Pouring. The field maintains a shallow water layer of 3 to 5 cm when applied. Applying the medicine on a sunny day after the rain, it is impossible to encounter heavy rain within two hours after application.
Rice aphids focus on the prevention and control of second-generation sorghum and second-generation sorghum, focusing on paddy fields from the ear to the ear. Use 5% insecticidal double granules per acre 1~1.5 kg, or use 25% insecticidal double agent 150-200 ml per acre or 25% insecticidal double agent 100 ml plus Bt emulsion 100 ml Add 60-75 kg of conventional spray or 5 to 7.5 kg of low-spray spray. In the sericulture area, it is best to use insecticidal double granules to spread the mulberry leaves. The field maintains a shallow water layer of 3 to 5 cm when applied.
Rice planthoppers In the peak period of nymphs, when the amount of worms reaches more than 1500, the application is controlled. When applying the medicine, start from the periphery of the field and encircle from the outside to the inside. Per acre with chlorpyrifos WP or 25% eucalyptus WP 20-25 g, or 20% eucalyptus emulsifiable concentrate 150 ml, water 75-100 kg conventional spray or water 5 to 7.5 kg low spray .
The control of rice locusts is focused on late-maturing mid-season rice fields. At the peak of young larvae, the cultivars of rice cultivars are applied at 10-20 heads. Use 90% crystal trichlorfon 75-100 grams per acre or 50% killing pine oil 100-250 ml or Bt emulsion 150-200 ml, add water 75-100 kg conventional spray or add water 5-7.5 kg low-volume spray . Apply after 4 pm on sunny days.
The rice leaf roller is mainly used to control the main damage generation. In the young larval stage, there are 15 to 20 larvae of the first few larvae, or 20 worms at the ear stage, and 25% of the insecticidal double water agent per acre is 150 to 200 ml or 50%. 72 ml of emulsifiable concentrate, 60-72 kg of conventional spray or 5 to 7.5 kg of low-injection spray of water. It is advisable to apply the evening.
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