Rice false smut is also known as rice blight, powdery mildew, rice flowering rice, and the like. After the occurrence of rice false smut, it will not only affect rice yield, but also affect quality and sales price. So how to prevent and cure rice false disease? Let's take a look at it. Rice smut Rice false smut is caused by the seed bacterium or the residual sclerotia of the rice smut in the soil. When the temperature and humidity are suitable, the conidia germinated by the pathogen are transmitted by the airflow or rainwater. Generally, the pathogens germinate before the rice breaks, and the rice flowering to the milky stage infects the rice panicle flower or the young bird causes the disease. In addition to the disease resistance of rice smut, it is mainly related to temperature, humidity and rainfall during fertilization and heading. Generally, the temperature of rice in the heading and flowering period is 24-32 °C, and the field humidity is more than 90%, which is good for the disease. Nitrogen fertilizer is applied late, late application or rice heading and flowering period is more cloudy and rainy weather, rainfall is large, the field is closed, the light is insufficient, or the dew is heavy. The number of foggy days is also likely to cause disease. Therefore, the control of rice smut should be based on disease-resistant varieties, supplemented by agricultural preventive measures, and timely prevention and treatment strategies for spray protection: 1. Selection of resistant varieties It is preferred to use disease-resistant varieties for cultivation. When purchasing seeds, attention should be paid to the resistance of rice varieties to rice smut. It is best to use a variety of varieties that have been tested and promoted and resistant to rice smut. The rare Y series is not resistant to rice smut. 2. Soil testing and formula fertilization Add organic fertilizer, control nitrogen fertilizer, use less or no nitrogen fertilizer to apply grain fertilizer, re-apply joint fertilizer or boot fertilizer, NPK, etc. 3. Strengthen field management Reasonable close planting, avoiding excessive density in the field, shallow water in the field, avoiding long-term maintenance of deep water in the field. When the field of rice smut in the previous year was severely planted, it should be deep-turned and the diseased bodies in the field should be cleaned up. 4. Seed treatment Before sowing, it can be sterilized by 1% lime water soaking, or 2500 times of liquid soaking seeds can be routinely soaked, or it can be prevented by using 3% phenyl ether methylcyclazole seed coating agent 50 ml. 5. Spray protection Previously, 5-7 days before the break was required to prevent spraying, but a large number of trials and demonstrations have shown that the first 10-15 days before the rice breaks, that is, the top leaf pillow of rice is consistent with the leaf pillow of the leaf below the spray. Preferably, premature or too late affects control. The medicine can be used to take 20-30 ml of the enemy, or 30-40 ml of Ami, or use tebuconazole. After the occurrence of rice false smut, the spraying is generally basically ineffective, but basic copper sulphate can be used to detonate the granules in order to increase the selling price. The above is about the introduction of rice smut. For rice smut, we must take precautionary measures. Only good measures can guarantee the yield and quality of rice. As a farmer, the yield quality of rice is closely related to the income. Be sure to pay attention to it. I hope that the contents of Xiaobian can help the majority of rice growers. Canned Red Kidney Beans,Red Kidney Beans Canned,Red Kidney Beans Tin,Red Kidney Beans Can ZHANGZHOU TAN CO. LTD. , https://www.zztancan.com
