Trends and prevention of diseases and pests in rice and vegetables in July

July has been a hot season in our country. The occurrence of pests and diseases on rice and vegetables is heavy. This year's Waseda can be harvested on or about July 20th. With the harvest of early rice, some of the pests that were damaged by early rice will migrate to single-season rice. Single-season rice has been planted since mid-May, and has been planted for more than one month since July. Most of them have entered the period of tillering. The rice in the field is green and green, which is conducive to the occurrence of pests. In July, the single-crop rice field recurrence season was mainly caused by the disease. There are four (2) generations, five (3) generations of rice leaffolders, second-generation stem borers, four (3) rice planthoppers, five (4) rice planthoppers, and sheath blight. The high-temperature pests on vegetables such as Spodoptera litura, Spodoptera exigua, and Plutella xylostella may occur on cauliflower, alfalfa, pakchoi, and pineapple. The melons on the melons will have certain damage. Summer vegetables on the red spider, palm thrips will also re-occur. Therefore, local farmers need to use low-toxicity, high-efficiency, low-residual pesticides for timely control in accordance with the occurrence of pests and diseases, and they must pay attention to medication safety in the summer. I. Single-season paddy fields of rice pests and diseases Due to different planting periods and different growth conditions between the fields, according to the law of occurrence of diseases and pests all year round in China, the single-crop paddy fields need to be controlled three times in July. For the first time around July 8-10, the main peak of the prevention and control of four (2) rice leaffolders was focused on the two generations of the second peak of rice stem borer and rice planthoppers. 30 ml of +50% porphyrin 3 g, or 40% chlorpyrifos 80 ml +10% imidacloprid 20 g, flush 45 kg, evenly fine spray; the second time around July 20, to control the second generation The main peak of the stem borer is the focus of the disease, including rice bran, rice bran, etc. The medicine can be used with 20% triazophos 150-200 liters, 45-60 kg coarse spray, about 1 inch of water in the field, and water after medicine. 5 days or so; the third time at the end of July, with the focus on the prevention and treatment of five (3) rice leaffolders, followed by the second generation of second-inferiority after-peak, five (4) generations of rice planthoppers, etc. % Shan Rui 50-60 ml, or 75% vertical volume 80g + 10% Haizheng thumb, or 5% Ruijinte 40 + 10% imidacloprid 20g, such as field blight has occurred, can be another Add 3% Jinggangmycin 300 ml. Continuous cropping of late rice at the end of July was focused on the prevention and control of the second generation of rice stem borer. Second, vegetable pests Spodoptera exigua, Spodoptera exigua, and Plutella xylostella are susceptible to re-emergence on vegetables in the hot season. Before the larvae disperse harm, the nocturnal insect pests can take eggs, young larvae concentrate damage to the leaves, reduce the number of medications, the agent can be used 5% fipronil 1000 times, or 40% chlorpyrifos 800 times +10% imidacloprid 1500 times, or 40% of the new Nongpo 1500 times + 1500 times. The diamondback moth can use 1,000% 0.3% green crystals, or 2.5% vegetable dishes 600-800 times, or 10% of Scorpion 2000 times rotation. Red spider can use 1.8 times of double worms, 2000 times, or 1500-2000 times.