The current sugar beet is in the early stage of leaf plexus-beet expansion. It is expected that sugar beet will enter the middle and late stage of sugar beet in mid-July, that is, the sugar beet expansion period and the initial accumulation of sugar, which is also a key period for pest control. To this end, do a good job in the prevention of pests and diseases in the middle and late stages of sugar beet, which is the key work to ensure the high yield of sugar beet. I. Current occurrence of sugar beet pests and diseases 1. Root rot occurs lightly. At present, the diseased field is 11.4%, and the average diseased plant rate is 0.23%. The degree of occurrence is lighter than that of the same period of last year. 2, beet brown spot: currently sporadic - light occurrence. The rate of diseased fields was 3.7%, and the rate of diseased plants was 1.3%. The occurrence is lighter than the same period last year. 3, beet stems like a: moderately light hair, local plots are moderately biased, the average rate of insects is 8.7%, up to 25.5%, mainly occurred in Xiaoyingpan Town, Bole City, Qingdeli Town, sugar beet Planting area. 4, beet leaf moth: moderately light occurs, there are larvae 2-5 head / square meter, 100% hazard rate of 51%, relatively heavy plots have larvae 20-30 head / square meter, the overall age of the pest is mostly 2-3 years old. 2. Prediction and prediction of beet sugar beet pests and diseases in the middle and late stages 1. Beet leaf moth: It is expected to occur moderately, with an area of ​​30,000 mu. The occurrence period is from the end of June to the middle of July, mainly in the Bozhou sugar beet planting area. 2. Beet stems like a beetle: It is expected to occur moderately, with an area of ​​10,000 mu. The occurrence period is from the end of June to the middle of July, mainly in the Bozhou sugar beet planting area. 3. Beetroot rot: It is expected to occur lightly, with an area of ​​10,000 mu, and some local plots occur moderately, with an area of ​​500 mu. The occurrence period is sugar beet from July to August. 4. Beet brown spot disease: It is expected to occur moderately and lightly, and local plots occur moderately, with an area of ​​30,000 mu. The occurrence period is from mid-July to late August. 5. Beet powdery mildew: It is expected to occur moderately, and local plots occur moderately, with an area of ​​20,000 mu. The occurrence period is from mid-July to late August. Basis: First, there is a certain source of disease, plus the beet weight has a certain planting area, which is conducive to the occurrence and spread of the disease; second, the climate is conducive to the occurrence and spread of the disease, during the field irrigation period, the field humidity is greater, which is beneficial to the beet The occurrence and spread of brown spot. If the temperature is high and the rainfall is too high, it will be beneficial to the occurrence of sugar beet powdery mildew. The base of beet leaf moth and beet stem is large, and the high temperature weather is beneficial to the outbreak of beet leaf moth and stem beetle. Third, prevention and treatment recommendations: 1. Beet leaf moth: On the basis of various agricultural control measures such as irrigation, cultivating, weeding and cleaning, carry out light trapping and killing adults, and master the prevention and control of egg larvae or young larvae in a timely manner. Recommended choice: 2.2% emamectin benzoate microemulsion (Haizheng Sanling) 2500-3000 times solution; 5% fluridazine emulsifiable concentrate (Shengbao) 1200-2000 times solution; 2.5% high efficiency chlorine Spraying and controlling beet leaf moth with flufenthrin 1500-2000 times liquid. 2, beet stems like a: 22% of the use of 22% worms, high chlorofluoro (Arica) per acre, or 40% of chlorantraniliprole thiamethoxam water dispersible granules (Fog) 10 grams, or 6.7% flubendiamide plus 3.3% avermectin suspension (rice) 1500 times liquid spray, can effectively control the damage of beet stems. 3, root rot: 1, early detection of diseased plants, timely excavation and deep burial, and lime disinfection of the diseased points to prevent disease expansion; in the onset of the period can be used 75% chlorothalonil WP 500 times liquid (15 kg 30 grams of water, sprayed on the foliage or root irrigation; 2, strengthen field management. Avoid flooding of large water, implement furrow irrigation, and reduce mechanical damage. 4, powdery mildew: optional use of 12.5% ​​of the enemy Kangkang wet mu amount of 40 grams, 15% triazolone wettable powder 80-100 grams per acre. 20% triazolone emulsifiable concentrate is 50-60 grams per acre, flusilazole is used in an amount of 4-6 grams per mu, nitrile is 12-15 grams per acre, and conventional sprayer uses about 30 kilograms per acre, evenly sprayed. 1-7 days, even spray 2-3 times. 5, beet brown spot: 50% carbendazim WP 800-1000 times solution (15 kg water 15-20 grams), or 70% thiophanate-methyl WP 1000 times (15 kg water) Dispensing 15 grams) 15 grams, or 43% good Lectra suspension 3000-4000 times solution, (15 kg water dispensing 4-5 grams). More pesticide knowledge , please pay attention to China Pesticide Network H3 Led Headlight,H3 Headlight,H3 Headlight Led,H3 Led Headlight Bulb CHANGZHOU CLD AUTO ELECTRICAL CO.,LTD , https://www.cld-led.com