How to prevent and treat pests and weeds

How to prevent and treat pests and weeds

A: The current promotion of super rice varieties (combinations) has a long growing period, a large demand for nitrogen fertilizers, and farmers usually use too little potassium, plus some varieties have genetically inherited rice blood, so compared with other rice varieties, Super rice is susceptible to rice sheath blight, rice blast, and rice smut. Super rice has a relatively thin planting density. The area exposed in the early stage is large, and the weeds grow rapidly. In the later period, the growth is luxuriant and it is easy to ignore the prevention and control of rice planthoppers. Rice sheath blight, rice blast and rice smut, and weed and rice planthopper prevention and control methods are described below;
1. For 5 days to 7 days after throwing or transplanting, in conjunction with topdressing, cast a net weight of 40 grams per 667 square meters in the castable field fertilizer, and 50% per 667 square meters in transplanting field fertilizer. Ruifeite 50ml of cream can be evenly applied to Datian to control weeds. If weeds continue to grow, they can also be used 1 to 2 times as described above.
2.Spray 5% Ruijinte Suspension 20ml, 30% Ai You EC 15ml or 5% Jinggangmycin Soluble Powder 50g every 667m 2 during the peak till the end of delivery, and dilute 1500 times with water. The amount of liquid medicine sprayed per 677 square meters is 30 kilograms, which can prevent and control rice sheath blight, rice leaf blast and aphid.
3. At the end of booting stage (3 days to 5 days before the break) and heading stage, 30% of Aiyou EC is applied once, diluted with water to 1500 times, and the amount of liquid is sprayed every 667 square meters. 45 kilograms can control rice smut, sheath blight and rice blast. In the event of rain, it is necessary to rush to spray in the falling rain.
4. After heading, depending on the occurrence of rice planthoppers, 3 grams of 5% Aktai water dispersible granules can be used per 667 square meters, diluted to 1500 times for water, and 45 kg of medicinal liquid is sprayed per 667 square meters. It can prevent rice planthoppers. There are other methods that can prevent rice planthoppers, and control the occurrence of insect pests once or twice.
The prevention and control of other diseases and pests of super rice can be performed by referring to the general rice pest control methods.

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