2019 is the El Niño year. It is expected that droughts and floods will occur frequently and severely. Extreme weather events are prevalent. Heavy rainfall should be very common. Therefore, this weather may be detrimental to rice production. How can we respond effectively? Let's take a look at it.
1. Water in the field
The large blocks of the hills open the “Ten†word ditch or the “well†word ditch. The water outlet should be deep and wide, so that the rain stop can discharge water and avoid guilt. Putian and Daejeon management are mainly based on dry pipes and cultivate strong root systems.
2, rice tiller reduction
Spraying 1-2 times of brassinolide in the tillering stage, the end of the peak period, the beginning of the blasting stage or the stage of the flowering stage, the concentration is 0.05mg/L-0.1mg/L.
3. Delay in rice growth period
Long-term rain and fog, in addition to the prolongation of the growth period, to avoid adverse effects on production in the late extreme weather, it is recommended that the sowing time is about 5 days earlier than the normal year.
4, low rate of filling and low seed setting
In early rice at the beginning of pregnancy and at the end of the booting stage, spray cytokinin 350 times, spray 50 kg per acre, medium and late rice should be sprayed once in the initial and middle stages of the rupture period, with 600-800 times spray should.
5. Pest control
(1) Rice blast. The rice blast disease mainly includes chronic lesions, acute lesions and white spot lesions. The main control agents are 40% tricyclazole, 40% rice glutinous rice (Fuji No. 1), 2% chunleimycin, and pyridin. Ibendazole (Indigo).
(2) Sheath blight. Sheath blight catches two key periods, horizontal horizontal infection and vertical infection, which can be used with 10% oxazolol 50g or 30% difenoconazole. Propiconazole 20-25ml or 24% Teflonamide 20-30 ml + silicone 10 g. It can also be used with 35% fluorocyclazole. Azoxystrobin suspension agent for 20 grams, the drug is used only once in a season.
(3) Rice smut. Once rice smut is incurable, it can be cured in two periods. One is 5-7 days before the break, and the second is 30%-50% of the beginning of the break. The medicament has 30% love seedling, 25% tebuconazole, 2% triazolone, 5% hexaconazole, 30% difenoconazole, propiconazole, 86.2% cuprous oxide and the like.
The above are some of the problems that rice growers should pay attention to this year. The increase of rainwater is likely to lead to high incidence of pests and diseases. Therefore, in order to protect the high yield and high quality of rice, these hazards and prevention methods should be completed.
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