1. A bacterial disease in the leaves of rice bacterial blight. The pathogen is a pathogenic species of rice xanthan rice in the prokaryotic community. Pathogens are immersed in roots, stems, and leaves from wounds and water holes, and are harmful in the vascular bundle. The seedling stage and tillering stage are the most vulnerable. The leaves of the seedlings showed more symptoms of leaf blight. Acute wilting symptoms appear on infected varieties, and the lesions are blue-gray and water-stained. The diseased leaves are rapidly curled and wilted, and brown spots are produced on the resistant varieties. The development of the pathogen is 26 °C-30 °C, and the winter is over the diseased body. The rice species can also carry bacteria and spread through the wind and rain. Excessive nitrogen and low hoarding paddy fields are early and severe. After the storm, the disease often spreads rapidly on susceptible varieties. Control measures: selection of disease-resistant varieties, prevention of flooding of rice fields is the key to disease prevention, combined with chemical control.
Second, rice seedling disease, also known as white stalk disease, is a fungal disease in the upper part of rice. The pathogen is Gibberella serrata from Ascomycota. The asexual state is the Fusarium oxysporum. It can occur from the seedling stage to the heading stage. The diseased plant is long, thin and yellow, usually 3-10 cm taller than the healthy plant, and is easily recognizable. There are often aerial roots on the base of the diseased plant, and there is a layer of pink mold. The pathogen is developed at a suitable temperature of about 25 °C, and the seeds are bacteria-borne. The selection of disease-free seeds or soaking seeds with pesticides before sowing is a key measure for prevention and control.
3. Rice sheath blight should be applied to the affected rice fields when the rate of diseased plants at the booting stage is 30%-4%. The liquid should be sprayed in the middle and lower parts of the rice plant. With the pouring method, the field should maintain a watering layer of 3 cm - 5 cm. When applying Jinggangmycin, it is best to do it on a sunny day after rain, or when there is no heavy rain within two hours after application. Use 5% Jinggangmycin water 100ml-150ml, or Jinggangmycin high-concentration powder 25g, either one, spray 100kg of water, or pour water 400kg.
Fourth, the rice aphid should focus on the prevention and control of the 2nd generation 2 phlegm and the 2nd generation 3 phlegm in some areas, and focus on the paddy fields before the rice is in the booting stage to the heading. 5% with 5% insecticidal double granules 1 kg - 1.5 kg, or 25% with 25% insecticidal double agent 150 ml - 200 ml, or 25% insecticidal double agent 100 ml plus BT emulsion 100 ml, Either one, a conventional spray of 60 kg to 75 kg of water, or a low amount of spray of 5 kg to 7.5 kg of water.
5. Rice planthoppers should master the peak period of small nymphs, and apply pesticides when the amount of insects per plexus reaches 1500 or more. When taking medicine, pay attention to starting from the four sides of the field, from the outside to the inside, carry out the cofferdam. Spray the drug evenly and thoughtfully, pay attention to spraying the liquid in the middle and lower parts of the rice plant. Use chlorpyrifos WP -20g-25g, or 25% eucalyptus WP 20g-25g, or 20% eucalyptus emulsifiable concentrate 150ml, optional one, water 75kg-100kg conventional Spray, or spray a low amount of water from 5 kg to 7.5 kg.
6. Rice locusts focus on late-middle rice fields, and master the age of young larvae. When there are 10 to 20 heads per 100 bushes of rice, they are applied. Use 90% crystal trichlorfon 75g-100g, or 50% killing pine oil 100ml-250ml, or BT emulsion 150ml-200ml, either one, water 75kg-100kg conventional spray , or spray a low amount of water from 5 kg to 7.5 kg.
Seventh, the rice leaf roller is the main control of the main damage. In the young larval stage, there are 15-20 babies per plexus of rice, or 20 worms per plexus at the ear stage. Use 25% insecticidal double water agent 150ml-200ml, or 50% killing pine oil 72ml, either one, water 60kg-72kg conventional spray, or water 5kg-7.5kg low spray. The application time is appropriate in the evening.
Vigorously promote the use of new technology of powder rusting at the earing stage. At the booting stage of rice, 15% of the rust-wet WP can be used in an amount of 50g-100g per acre. The conventional spray or low-spray spray can effectively prevent the premature aging of hybrid rice, and can also cure rice sheath blight, rice smut, rice. A variety of ear disease diseases such as grain black powder disease.
Second, rice seedling disease, also known as white stalk disease, is a fungal disease in the upper part of rice. The pathogen is Gibberella serrata from Ascomycota. The asexual state is the Fusarium oxysporum. It can occur from the seedling stage to the heading stage. The diseased plant is long, thin and yellow, usually 3-10 cm taller than the healthy plant, and is easily recognizable. There are often aerial roots on the base of the diseased plant, and there is a layer of pink mold. The pathogen is developed at a suitable temperature of about 25 °C, and the seeds are bacteria-borne. The selection of disease-free seeds or soaking seeds with pesticides before sowing is a key measure for prevention and control.
3. Rice sheath blight should be applied to the affected rice fields when the rate of diseased plants at the booting stage is 30%-4%. The liquid should be sprayed in the middle and lower parts of the rice plant. With the pouring method, the field should maintain a watering layer of 3 cm - 5 cm. When applying Jinggangmycin, it is best to do it on a sunny day after rain, or when there is no heavy rain within two hours after application. Use 5% Jinggangmycin water 100ml-150ml, or Jinggangmycin high-concentration powder 25g, either one, spray 100kg of water, or pour water 400kg.
Fourth, the rice aphid should focus on the prevention and control of the 2nd generation 2 phlegm and the 2nd generation 3 phlegm in some areas, and focus on the paddy fields before the rice is in the booting stage to the heading. 5% with 5% insecticidal double granules 1 kg - 1.5 kg, or 25% with 25% insecticidal double agent 150 ml - 200 ml, or 25% insecticidal double agent 100 ml plus BT emulsion 100 ml, Either one, a conventional spray of 60 kg to 75 kg of water, or a low amount of spray of 5 kg to 7.5 kg of water.
5. Rice planthoppers should master the peak period of small nymphs, and apply pesticides when the amount of insects per plexus reaches 1500 or more. When taking medicine, pay attention to starting from the four sides of the field, from the outside to the inside, carry out the cofferdam. Spray the drug evenly and thoughtfully, pay attention to spraying the liquid in the middle and lower parts of the rice plant. Use chlorpyrifos WP -20g-25g, or 25% eucalyptus WP 20g-25g, or 20% eucalyptus emulsifiable concentrate 150ml, optional one, water 75kg-100kg conventional Spray, or spray a low amount of water from 5 kg to 7.5 kg.
6. Rice locusts focus on late-middle rice fields, and master the age of young larvae. When there are 10 to 20 heads per 100 bushes of rice, they are applied. Use 90% crystal trichlorfon 75g-100g, or 50% killing pine oil 100ml-250ml, or BT emulsion 150ml-200ml, either one, water 75kg-100kg conventional spray , or spray a low amount of water from 5 kg to 7.5 kg.
Seventh, the rice leaf roller is the main control of the main damage. In the young larval stage, there are 15-20 babies per plexus of rice, or 20 worms per plexus at the ear stage. Use 25% insecticidal double water agent 150ml-200ml, or 50% killing pine oil 72ml, either one, water 60kg-72kg conventional spray, or water 5kg-7.5kg low spray. The application time is appropriate in the evening.
Vigorously promote the use of new technology of powder rusting at the earing stage. At the booting stage of rice, 15% of the rust-wet WP can be used in an amount of 50g-100g per acre. The conventional spray or low-spray spray can effectively prevent the premature aging of hybrid rice, and can also cure rice sheath blight, rice smut, rice. A variety of ear disease diseases such as grain black powder disease.
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