The rice planting in my hometown is basically over. Most of the early rice has entered the peak period of crop production. At this time, it is also a variety of pest and disease-prone periods. In addition, this year's drought and less rain, therefore, we must take early precautions against pests and diseases, and prevention and control should adhere to the principle of “prevention The main, comprehensive prevention and control of plant protection policy.
After many years of observations, there are five major pests and diseases in our township: they are described in the order of occurrence and prevention after transplanting fields.
I. Sharp Blight: It is a physiological disease, and it is easy to make fields: cold invading fields, rust paddy fields, and muddy fields. It occurs 15-30 days after transplanting. The main symptoms are: plantlets are small, have no or fewer tillers, and the leaves are initially changed. It is dark green and there are many red-brown spots on the tip of old leaves, like rust. Looks like a fire, causing the early sitting.
Control methods:
(1) Trenching to remove rust and cold water, scientific water use, shallow water ground irrigation, and timely drying of the fields to promote the early growth of strong rice seedlings and enhance disease resistance.
(ii) Potassium fertilizer-free plots, with application of potash or plant ash, 10-50 kg per mu; plots of phosphate-free fertilizer applied with calcium phosphate 10-15 kg per acre; acid poisoning fields, lime per acre applied 15 - 25 kg.
Second, rice planthoppers: strengthen field management and create an ecological environment that is not conducive to rice planthoppers. Reasonable fertilization to prevent premature closure of rice, greedy green and late; in the water management, shallow water ground irrigation, timely field drying, prevent long-term accumulation of water, deep-water flooding fields, mud pollution.
Protect and use natural enemies. There are many types of natural enemies of rice planthoppers, such as ladybugs and spiders. They play an important role in controlling the damage of rice planthoppers. They must adopt measures for selecting and controlling pesticides, adjusting the time of medication, improving the methods of application, and reducing the number of medications. Actively protect natural enemies so that natural enemies can fully exert their control over rice planthoppers. When the amount of 100 insects is more than 1000, it should be treated with medicaments in time.
Chemical control. The prevention and control strategy of “emphasizing the key points and pressing before and after control†should be adopted, and the rules should be controlled and put together to extinguish, leaving no dead ends. Use for prevention and cure pharmaceuticals: 25% fluocazide WP with 25-30 g/mu, add water 50 kg spray; 20% Yeyu San EC 100 g/mu, or 80% DDVP EC 100 g/mu, watered 50 kg Spraying.
Third, rice blast: strengthen water and fertilizer management. Pay attention to the use of nitrogen, phosphorus and potassium fertilizers to avoid excessive use of nitrogen fertilizer and long-term irrigation in the later period, so as to promote rice growth robustly and improve disease resistance.
Chemical control. In the early stage of leaf blast, the pesticide application should be controlled early in the disease center, and the surrounding rice plants or rice fields should be protected by pesticides. After controlling the leaf blast, the pesticide should be applied at the end of booting, heading, or heading to prevent rice. plague. Can be used 20% tricyclazole WP 100 grams / acre, watered 50 kg spray.
4. Bacterial blight: Early application of topdressing promotes robust rice growth and enhances resistance to disease. Fields that are about to be affected and fields that are emerging from the onset of disease should be promptly sprayed to prevent or block the onset center. Immediately after storms and floods, they should be sprayed with 20% Ye Chuan WP 100 g/mu and 50 kg watered.
5. Rice smut: In the flowering stage of rice, it is treated with chemicals 1-2 times, and 2 million units of Jinggangmycin can be used for 20 g/mu, or 25% triadimefon can be used as 100 g/mu of wettable powder, and 50 kg of water can be sprayed.
After many years of observations, there are five major pests and diseases in our township: they are described in the order of occurrence and prevention after transplanting fields.
I. Sharp Blight: It is a physiological disease, and it is easy to make fields: cold invading fields, rust paddy fields, and muddy fields. It occurs 15-30 days after transplanting. The main symptoms are: plantlets are small, have no or fewer tillers, and the leaves are initially changed. It is dark green and there are many red-brown spots on the tip of old leaves, like rust. Looks like a fire, causing the early sitting.
Control methods:
(1) Trenching to remove rust and cold water, scientific water use, shallow water ground irrigation, and timely drying of the fields to promote the early growth of strong rice seedlings and enhance disease resistance.
(ii) Potassium fertilizer-free plots, with application of potash or plant ash, 10-50 kg per mu; plots of phosphate-free fertilizer applied with calcium phosphate 10-15 kg per acre; acid poisoning fields, lime per acre applied 15 - 25 kg.
Second, rice planthoppers: strengthen field management and create an ecological environment that is not conducive to rice planthoppers. Reasonable fertilization to prevent premature closure of rice, greedy green and late; in the water management, shallow water ground irrigation, timely field drying, prevent long-term accumulation of water, deep-water flooding fields, mud pollution.
Protect and use natural enemies. There are many types of natural enemies of rice planthoppers, such as ladybugs and spiders. They play an important role in controlling the damage of rice planthoppers. They must adopt measures for selecting and controlling pesticides, adjusting the time of medication, improving the methods of application, and reducing the number of medications. Actively protect natural enemies so that natural enemies can fully exert their control over rice planthoppers. When the amount of 100 insects is more than 1000, it should be treated with medicaments in time.
Chemical control. The prevention and control strategy of “emphasizing the key points and pressing before and after control†should be adopted, and the rules should be controlled and put together to extinguish, leaving no dead ends. Use for prevention and cure pharmaceuticals: 25% fluocazide WP with 25-30 g/mu, add water 50 kg spray; 20% Yeyu San EC 100 g/mu, or 80% DDVP EC 100 g/mu, watered 50 kg Spraying.
Third, rice blast: strengthen water and fertilizer management. Pay attention to the use of nitrogen, phosphorus and potassium fertilizers to avoid excessive use of nitrogen fertilizer and long-term irrigation in the later period, so as to promote rice growth robustly and improve disease resistance.
Chemical control. In the early stage of leaf blast, the pesticide application should be controlled early in the disease center, and the surrounding rice plants or rice fields should be protected by pesticides. After controlling the leaf blast, the pesticide should be applied at the end of booting, heading, or heading to prevent rice. plague. Can be used 20% tricyclazole WP 100 grams / acre, watered 50 kg spray.
4. Bacterial blight: Early application of topdressing promotes robust rice growth and enhances resistance to disease. Fields that are about to be affected and fields that are emerging from the onset of disease should be promptly sprayed to prevent or block the onset center. Immediately after storms and floods, they should be sprayed with 20% Ye Chuan WP 100 g/mu and 50 kg watered.
5. Rice smut: In the flowering stage of rice, it is treated with chemicals 1-2 times, and 2 million units of Jinggangmycin can be used for 20 g/mu, or 25% triadimefon can be used as 100 g/mu of wettable powder, and 50 kg of water can be sprayed.
KN95 Masks are anti-virus. KN95 masks are similar to N95 masks, except that one is a Chinese standard and the other is an American standard.
If there are two numbers of 95, it means that the protective ability of this mask is above 95%. That is to say, for tiny substances larger than 0.3 micrometers, the mask has a defensive ability of more than 95%, and it can block tiny substances larger than 0.3 micrometers outside the mask. Viruses and bacteria are generally larger than 0.7 micrometers. Therefore, using a mask such as KN95 can effectively protect against viruses.
KN95
Kn95 Mask,Mouth Mask,N95 Face Mask,Ear-Loop Mouth Mask
BIQIAO MEDICAL TECHNOLOGY(HENAN) CO.,LTD , https://www.medical-technology.net