Common pests and diseases of rice and their control methods

Nearly half of the world's population feeds on rice, but rice cultivation is often endangered by rice blast, white leaf blight, bacterial stripe disease, sheath blight, rice smut, rice planthopper and rice borer. Let us know more about it.

First, the prevention and treatment methods of rice blast:

1. Prevention and control of rice leaf blast: When there are lesions in the field, use 20% tricycloazole wettable powder 100g, spray with 45kg of water; 30% clean emulsifiable concentrate 15ml, spray with 45kg of water, 50% thiazole 200~250ml/mu, even twice, every 5~7 days.

2, prevention and control of rice spiked rice blast: the best period for controlling rice blast is the break period, the choice of medicine: 75% tricyclazole WP powder for 30 grams; or 40% Fuji No. 1 emulsifiable milk 150 ml; Any kind of medicinal agent can be controlled by spraying 45 kg of water, and it can be prevented three times, once every 5~7 days.

Second, rice leaf blight, bacterial leaf streak prevention and treatment methods:

When the lesion appears in the field, immediately apply the drug control, the agent selection: 25% Chuanhua 018 wettable powder for 100 grams, 45 kg spray with water; or with agricultural streptomycin for 2 bags with water 45 kg spray Prevention and treatment.

Third, rice sheath blight prevention and control methods:

The best period of prevention and control is the booting stage. Selection of medicaments: 2 packs of Jinggangmycin per acre of rice, sprayed with 45 kg of water for spraying; or use 75% of rice stalked succulent wettable powder for 40 grams, with 45 kg of water spray control; 30% clean at the same time 20 ml of milk oil and 45 kg of water spray control.

Fourth, rice blast disease prevention and control methods:

Rice false smut mainly occurs in the late growth stage. During the control period, the booting stage or heading stage should be seized. The choice of the medicinal agent: (1) using the Jinggangmycin 2 package plus 15% of the rusting 100 grams, and spraying with 45 kg of water; (2) 30% cleansing emulsifiable concentrate 25ml with water 45kg spray control. (3) 70% Nasjin WP can be controlled with 40 grams of water and 45 kg of spray.

5. Prevention and control methods of rice planthopper:

Rice planthoppers mainly inhabit the base of rice groves, absorb plant juice, make rice plants turn yellow, affecting yield, and control agents: 25% of eucalyptus WP can be used for 30 grams; or 25% carbaryl WP 100 grams of acres, 45 kg of water spray control; can also be used 20% of the spirit of emulsifiable milk with 100 ml of water and 45 kg spray control. It can also be controlled by using a pirazinone or a 10% imidacloprid 30 g/mu water spray of 45 kg.

6. Control methods for rice borers:

Rice locusts cause dry or white spikes after rice damage, and the selection of control agents: use 98% of the original powder of Badan, use 30 grams of fine soil for 25 kg, or use 50% of phobic WP for 80 grams per acre of rice. It can be controlled by spraying 45 kg of water; it can also be controlled by spraying 25% quetiapine emulsifiable concentrate 150 ml with water 45 kg.

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