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First, agricultural control: choose sheltered sunny, high-lying flat, fertile plots of loose land for seedbed, seeds before sowing to dry, the amount of sowing can not be too large, scientific fertilization, water management, timely ventilation and hardening of seedlings.
Second, the application of plant growth regulators: in the seedlings 1 to 2 leaf stage sprayed rooting agent, every 2 grams of water 30 kg spray 40 square meters of seedbed to promote early root hair growth and robust seedlings.
Third, drug control: seed treatment before sowing and disinfection of the sacral plate. Before sterilization, rice seeds must be sun-dried and seeded, and then disinfected; seedlings should be controlled immediately after the onset of disease, and crops or disease centers should be sprayed for prevention and treatment at the beginning of cropping.
(A) the preferred transplanting Ling Yu Yu disease prevention: breeding seedlings per square meter with transplanting spirit 1? 2 ml watered 3? 5 kg, when the base fertilizer can be used together dissolved in water, stir, and then evenly poured in the agent Bed soil, sowing seeds and cover the soil; in the seedlings 1? 2 leaf stage or early onset of the disease and then spray evenly.
(2) 50% 2% enemy water and 3-5 kg ​​water will be sprayed on the boring machine before sowing per square meter during the breeding period, and a filling pocket will be used at the time of 1-2 leaf stage or early stage of the disease. double effect.
Rice Blight Control Technology
Rice blight is one of the most serious diseases of dry rice seedlings in rice. Its main causes are low temperature, large temperature difference and alkaline soil. The main symptoms of field disease include postemergence seedlings withered, easy to pull off, and stems. The base was rotted, with rotten pear smell. The whole disease with a heavier disease died. The base of the diseased plant had red moldy material. The blight is divided into two types, physiological blight and pathological blight. Once the disease is difficult to control, the prevention and control should be mastered. Its main control measures are as follows: