Rice blast, sheath blight, stripe leaf blight, and black stripe dwarf disease are four major diseases on rice, and production measures should be taken in time to prevent and control it.
Rice blast can be divided into seedlings, leafhoppers, panicle blasts, and grain hoppers according to different growth periods and locations of rice. To prevent rice blast, in the early stage of rice tillering, spray 30% chitosan oligosaccharide 50 ml and 30 kg water per mu. In the event of flooding during the flood season, when diseased plants occur in paddy fields, 75% tricyclazole WP may be used per acre for 25-30 grams, or 25% chloramphenicol wettable powder 40-50 ml, or 3% chitosan water. Agent 70 ml, add water 30 kg spray control.
The occurrence of sheath blight begins at the peak stage of the tillering, which mainly damages the leaf sheath of rice, followed by the leaves, forming mottled lesions. Can use 5% Jinggangmycin agent 300-350 ml per acre, or 30% Benzopic benzoate EC 15-20 ml, or 24% Thiopenem suspension agent 15-20 ml, or 3% chitooligosaccharide agent 50 ml, add water 30 to 45 kg spray control.
Stripe leaf blight virus disease transmitted by the planthopper, which can be sprayed with a virus deactivator at the beginning of the disease. For example, 2% nymphenicin aqueous solution per acre, 250 ml, or 50% chlorobromoisocyanuric acid wettable powder 30 g, or 1% lentinan liquid 60 ml, add 30 kg of water spray, continuous spraying 2 or 3 times. In the early stage of manifestation, it is also necessary to cooperate with prevention and control of Laodelphax striatellus. The applicable drugs include pymetrozine, nitenpyram, and isoprocarb.
Black-streaked dwarf disease is also a viral disease transmitted by SBPH. The main measures for prevention and control are prevention and control of Laodelphax striatellus with the application of a virus deactivator. Can be used in the early onset of 2% per acre Ning Nanmycin water 250 ml, or 1% lentinan water agent 60 ml, or 3% chitosan water agent 50 to 75 grams, add water 30 to 45 kg spray.
Rice blast can be divided into seedlings, leafhoppers, panicle blasts, and grain hoppers according to different growth periods and locations of rice. To prevent rice blast, in the early stage of rice tillering, spray 30% chitosan oligosaccharide 50 ml and 30 kg water per mu. In the event of flooding during the flood season, when diseased plants occur in paddy fields, 75% tricyclazole WP may be used per acre for 25-30 grams, or 25% chloramphenicol wettable powder 40-50 ml, or 3% chitosan water. Agent 70 ml, add water 30 kg spray control.
The occurrence of sheath blight begins at the peak stage of the tillering, which mainly damages the leaf sheath of rice, followed by the leaves, forming mottled lesions. Can use 5% Jinggangmycin agent 300-350 ml per acre, or 30% Benzopic benzoate EC 15-20 ml, or 24% Thiopenem suspension agent 15-20 ml, or 3% chitooligosaccharide agent 50 ml, add water 30 to 45 kg spray control.
Stripe leaf blight virus disease transmitted by the planthopper, which can be sprayed with a virus deactivator at the beginning of the disease. For example, 2% nymphenicin aqueous solution per acre, 250 ml, or 50% chlorobromoisocyanuric acid wettable powder 30 g, or 1% lentinan liquid 60 ml, add 30 kg of water spray, continuous spraying 2 or 3 times. In the early stage of manifestation, it is also necessary to cooperate with prevention and control of Laodelphax striatellus. The applicable drugs include pymetrozine, nitenpyram, and isoprocarb.
Black-streaked dwarf disease is also a viral disease transmitted by SBPH. The main measures for prevention and control are prevention and control of Laodelphax striatellus with the application of a virus deactivator. Can be used in the early onset of 2% per acre Ning Nanmycin water 250 ml, or 1% lentinan water agent 60 ml, or 3% chitosan water agent 50 to 75 grams, add water 30 to 45 kg spray.
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