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Strengthen specific measures for field management in rice in the middle and later stages
1. Do a good job of preventing and controlling pests and diseases. According to the current situation of rice growth and the adverse weather conditions that may occur in the later period, the risk of large-scale occurrence of pests and diseases is very large. It must be highly valued and must be prevented before the hazard. All localities must do a good job in predicting and forecasting pests and diseases so that timely detection and timely prevention and treatment can be achieved, with emphasis on the prevention and control of the "three diseases" of rice stem stalks, sheath blight, and rice smut. The two locusts, rice planthoppers and rice water weevil " Three insects." (1) Control of rice stem pods. In rice breakage and heading stage, use 20% tricyclazole 100 g or 40% rice bran (Fuji No. 1) EC 100 ml or 100 mg per gram, and water 50-60 kg in the afternoon. Spray at 4 o'clock. (2) Control of rice sheath blight. Per acre with 5% Jinggangmycin aqueous solution 150 ml or 25% powder 25 grams watered 75 kg, spraying at the beginning of the disease, the incidence of heavy land need to control twice, interval 10 - 15 days. (3) Prevention and control of rice smut. The drug was used before heading at the booting stage. Use 25% triadimefon per acre 50g watered 50-60kg spray, or DT fungicide 100g, watered 50-60kg spray. (4) Control of rice planthoppers. Prior to rice heading, spray 50-60 kg per acre with 20 grams of adipendin, or 60 kg of water per acre of 20-40 grams per acre. (5) Rice stem borer control. In early August, at the peak of the second-generation egg hatching of the second-generation larvae, per acre, spray 18 grams of insecticidal water double-acting agent 200 grams or 90% insecticide 50 grams of water to 50 kilograms of water or spray 100 kilograms of water. (6) Rice water weevil control. At the beginning of August, the Cenozoic adult was controlled and treated with 50 ml of rice flour or 50 ml of insecticide per mu and sprayed with 50 kg of water. 2. Strengthen water management. In the middle and later periods, the management of the water layer should be mainly shallow, shallow, wet, and dry intermittent irrigation techniques to avoid long-term deep-water flooding. Rice meiosis and flowering filling stages are moisture-sensitive periods. During this period, it is necessary to maintain a water layer in the field to prevent water cut off. After grouting, it can adhere to shallow, wet, dry intermittent irrigation, increase soil permeability conditions, increase root activity, prevent premature aging, increase the number of rice leaves, and increase the seed setting rate and 1000-grain weight. Saline-alkali paddy fields should adhere to shallow and wet intermittent irrigation, in order to prevent premature aging, but also to withdraw water appropriately. Low-lying and poorly-drained plots can be grouted without grouting, maintaining wet management and improving the soil environment. 3, do a good job of late fertilization. The late rice is mainly granular fertilizer. Applying granulated fertilizer can improve post-photosynthesis, speed up grain filling, increase seed-setting rate, and increase grain weight. In the application of panicle fertilizer, mainly consider soil conditions, rice growth, climatic factors, etc., soil conditions are good, adequate base fertilizer, rice leaves dark green, growing too fast, overcast and rainy days, may consider less or not Shi. The lack of physical strength, rice leaf color is lighter, when weather and weather conditions improve, we must adhere to the application of grain fertilizer, after the rice is pumped up, the application of urea 2-3 kg. 4, do a good job of three types of seedlings to upgrade and promote early maturation. The three types of seedlings are mainly stem number deficiency, we must work hard to increase the ear weight, take targeted measures, do a good job of application of granular fertilizer, increase the seed setting rate, increase the grain weight, increase the grain weight by 3 kg of urea per mu, and use it at the heading stage. For late-ripe rice, preparations should be made to prevent and cure cold damage. All management measures must be based on promoting early maturation. Specific measures: First, shallow water management, and implementation of intermittent irrigation, promote root development, increase ground temperature and promote early maturing; Second, we must pay attention to clearing field weeds. The third is to apply foliar fertilizers and spray hormones.