In the rice areas along the river, the medium-rice throwing method avoids or shortens the chance of a rice planted in the field of rice planting in the field, resulting in a decline in the population of the first generation, and thus reducing the occurrence of the second generation. However, due to the obvious advantages of early growth of the throwing rice, green plants, it is easy to attract codling moths to spawn, and overall, the occurrence of second generation of damage is aggravated. The japonica rice is mainly depended on tillering to form a panicle, heading is not neat, and the egg hatching period of the three generations of S. japonicum is a long-term anastomosis, resulting in a longer duration of rice damage, which is conducive to the development of three generations of populations. Therefore, under the current situation of various cultivation methods, the prevention and treatment of S. sinensis should follow the principle of “Governance of the Sui Dynasty, initiative, skillful management of the second generation pressure base, and three generations of decisive warfare.†First, eliminate the control base number of overwintering insects. Rice is the only host of S. japonica. It controls the law that S. brevicornus can only overwinter on rice (in rice roots), and implements "three cultivations" (active autumn cultivation, extended winter cultivation, early spring cultivation), and "three lights" in winter ( The rice roots were pulled out, lighted, and burned out, winter plowing and winter soaking, spring plowing and
Other measures were taken to achieve the purpose of eradicating the overwintering insects and suppressing the generation base. Second, the Japanese government ruled for the initiative. Under the current cultivation methods, regardless of whether they are transplanting fields or throwing fields, the prevention and control measures of Sanhua shall be given priority to the prevention and control of the generation, and the control of Sanhuan in the outcropping stage to control the occurrence of the second and third generations. Harm to harm, for their prevention and control work to take the initiative. Through observing and analyzing, the generation time of the first-generation rice stem borer is more than 10 days, so the medication arrangement is divided into two times; the first is scheduled from May to early June, to master the hatching peak of the three-phased quail eggs, with 5 per acre. % Regent suspension concentrate 40-50 ml plus 18% of insecticidal double-batch 200 ml or 20% of triazophos EC 100 ml, which is common to all seedlings (including direct-seeded rice and dry-farmed field) that have reached more than three leaf stages The drug is applied once; plastic trays are used to prevent and treat drugs about 7 days before throwing. The second medication is scheduled for 2 days before the transplanting or planting of the seedlings. The per acre is to use a persistent drug 150g or a 120ml of rice bran and a 50kg thick spray of water. This time, he used drugs to cure both large and small borers and played a role in supplementing the generation of worms. Third, Qiao governance two generations of pressure base. In order to reduce the dry heart rate caused by the second-generation S. mellonia scutellariae to 0.3% or less, the control pressure in the panicle stage of S. japonica is greatly reduced, and the transplanting fields and the residual insects above 300 heads/m must be used. Times, other fields are administered once. After many years of analysis, the second generation of S. sibiricus entered the peak of egg hatching in mid-late July. At this time, it was the second generation of the young nymph of the whitebacked planthopper, the second instar larval stage of the larvae of the second leafhopper, and the beginning of sheath blight. Prosperous period. In order to control a variety of diseases and insect pests, to achieve the purpose of one drug and multiple treatments, paddy fields with one-time drug should be hatched at the peak of three-phase larvae, with 50% of insecticidal amine WP 70g and 20% of triazophos EC per acre. Milliliter and 12.5% ​​of licorice WP 20g (or 5% Jinggangmycin 250ml) spray crude fog on 60kg of water; paddy field with 2 doses should be hatched from the above-mentioned pharmaceutical formulations in the second-generation S The first drug is used during the initial period of development, and the second drug is used for the same agent every 6-7 days.
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