How to treat rice dwarf disease? Desperate for help

Prevention and control is based on agricultural prevention and control, and the key is to grasp and control insects. (1) Reasonable crop layout, planting and harvesting in succession according to the maturity of varieties. Pay attention to the eradication of weeds in the field.

2) Insect control and disease prevention, focusing on the prevention and control of two peak migration periods of virus-transmitting insects, that is, the prevention and control of early rice seedling field and early Honda and late rice seedling field and early Honda. Spray with 10 15 grams of 10 imidacloprid wettable powder per mu and 75 kg of water.

With the current level of technology, viral diseases such as short contraction can only be prevented but not treated. Prevention method:

1. Choose disease-resistant varieties and avoid using susceptible varieties (the specific varieties of susceptibility are not disclosed here, otherwise people will scold me).

2. Prevent infection at the seedling stage. The disease is mainly transmitted through needle-suction mouthparts insects (rice planthoppers, leafhoppers, etc.) in the seedling stage, so it is necessary to strictly prevent these small flying insects in the seedling stage, and the seedling field is diligent with medicine, and it is best to use the medicine uniformly in the seedling field, so as not to give the flying insects the opportunity to spread.

3. Cultivate strong seedlings. The stronger the seedlings, the stronger the disease resistance, so it is important to cultivate strong seedlings in the early stage.

4. Once it happens, it can only be cleared, and there is no cure. If the area is large and the disease is severe, it is necessary to consider destroying the seedlings and planting other crops to reduce land loss.

Use Tianda 2116 + Ningnanmycin + Oxazalin + Silicone Foliar Spray, once every 5-7 days, spray 3 times in a row, and there will be no problem.

Change the water and don't use fertilizer again. The root yellow and black do not absorb nutrients. Fertilizers can make the condition worse. Are you from Shandong? Spray more nutrients. There are many reasons for this. You can't do the same without paying attention. Jin Dong.

(1) Choose disease-resistant (resistant) varieties such as International 26.

2) It should be planted in patches to prevent leafhoppers from spreading poison in early and late rice and varieties with different ripeness. Early rice is harvested early to avoid insect sources from moving into late rice. When harvesting, turn your back to the late rice.

3) Strengthen management, promote early emergence of rice seedlings, and improve disease resistance.

4) Promote chemical weeding, eliminate weeds such as Kanmai Niang, and reduce the source of overwintering insects.

5) Insect treatment and disease prevention. The first generation of nymphs that breed in rice fields should be controlled in a timely manner, and the peak period of black-tailed leafhoppers migrating into the double-cropping late rice seedling fields and Honda should be seized to eliminate the source of insects before the spread of poison. You can choose 25% thiazinone wettable powder, 100ml per 667m2 25g or 35% taxicarb net emulsifiable concentrate, 100g of 25% taxicarb wettable powder, spray 50L of water, 1 time every 3 5 days, and 1 3 times.

Because this is a viral disease, there is no good drug in China, and it is recommended to introduce a new plant-derived pesticide, and the special combination of TYii virus disease is also a new plant-derived pesticide.

Characteristics and control methods of rice dwarf disease:On the leaves or leaf sheaths, there are dotted linear-like yellowish-white dots parallel to the leaf veins, which are more obvious at the base, and the new leaves above the first diseased leaves appear dotted, and the old leaves below generally do not appear; Or the heart leaf is distorted when it is withdrawn, and the heart leaf is stretched, and the edge of the leaf is wavy, and the color is pale yellow.

Prevention and control methods: select disease-resistant rice varieties, plant them in patches, and strengthen management; Promote chemical weeding, eliminate weeds such as "Kanmai Niang", and reduce the source of overwintering insects.

Rice dwarf disease, also known as rice common dwarf disease, common dwarf, green dwarf, etc., is mainly distributed in the southern rice area. After the rice is susceptible from seedling stage to tillering stage, the plant is dwarfed, the tillering increases, the leaves are dark green, stiff, and the diseased rice cannot be headed and set fruit in the late growth stage.

Summary. Hello dear, rice dwarf disease cannot be transmitted with wind and rain, two adjacent plants, there is no intermediate, and healthy plants are not susceptible to disease. After rice is infected with dwarf virus, the effect of using drugs ** is not ideal, so it is mainly based on prevention, if my answer is helpful to you, please also give a thumbs up (in the lower left corner of the evaluation), look forward to your like, your efforts are very important to me, and your support is also the driving force for my progress.

Finally, I wish you good health and a good mood!

Hello dear, rice dwarf disease cannot be transmitted with wind and rain, two adjacent plants, there is no intermediate, and healthy plants are not susceptible to disease. After rice is infected with dwarf virus, the effect of using drugs ** is not ideal, so it is mainly based on prevention, if my answer is helpful to you, please also give a thumbs up (in the lower left corner of the evaluation), look forward to your like, your efforts are very important to me, and your support is also the driving force for my progress. Finally, I wish you good health and a good mood!

How is it**. How is it**.

How to prevent it. Hello, the activator plus chlorobromoisocyanuric acid is used to prevent and control diseases such as rotten seedlings, standing wither, cotton rot, seedling blast, and dwarf disease. 2. Application at tillering stage.

Diseased varieties or diseased fields: 25% pymetrozine (2 packs) or 50% pymetrozine (2 packs) + 20 grams of gene activator per mu If my answer is helpful to you, please also give a thumbs up (evaluate in the lower left corner), looking forward to your like, your efforts are very important to me, and your support is also the driving force for my progress. Finally, I wish you good health and a good mood!

Where can I buy this medicine.

Hello, you can buy Jingdong for your inquiry.

Prevention and control measures: 1. Breed and change disease-resistant varieties according to local conditions, and use new high-fat film to dress seeds before sowing to isolate virus infection and improve seed germination rate; And rational crop layout, early sowing to plant disease-resistant varieties, the implementation of continuous planting, as far as possible to plant varieties with similar maturity, to minimize the single and double cropping rice mixed planting area; When harvesting, turn your back to the harvested rice.

2. Improve cultivation management measures. Strengthen fertilizer and water management, timely deep ploughing of the field, remove weeds at the edge of the field, timely top dressing in the rice growth period, and at the same time spray strong panicle spirit at the jointing and booting stage to strengthen the physiological function of crops, improve the quality of pollination, fertilization and filling, and increase the 1000-grain weight.

3. Insect treatment and disease prevention. In the early stage of the disease, targeted agents such as prochlor aphid wettable powder and 25 paramefen wettable powder should be sprayed according to the requirements of plant protection, and at the same time, 800 times of the new high-lipid film should be sprayed to improve the utilization rate of the active ingredients of the agent and consolidate the control effect.

1. Yellow leaf dwarf of rice may be yellow dwarf disease, mostly from the lower 1-2 leaves of the parietal leaf, the disease spot develops from the tip of the leaf to the base, the mesophyll is bright yellow, the leaf veins are green, the angle between the diseased leaf and the stem increases, the leaf sheath is still green, the loose plant shape of the diseased plant is significantly dwarfed, and the early tiller is not distinguished, and the heading can not be sold.

2. Agricultural measures: select disease-resistant varieties according to local conditions, and eliminate susceptible varieties. Rationally arrange the distribution of crops and implement continuous planting. Improve cultivation management measures, strengthen fertilizer and water management, dry fields in a timely manner, and remove weeds at the edge of the field.

3. Pesticide prevention and control: 3% carbofuran granules are used in the disease-prevalent seedling field, mixed with 20 kg of fine soil, and sprinkled after sowing the kernel rice. Choose 100 ml per square meter of 50% medicarb emulsifiable concentrate, or 150 200 ml per square meter of 20% leafhopper dispersed emulsifiable concentrate, 40 50 kg of water, and apply the pesticide once every 5 7 days after the seedlings are green, a total of 2 3 times.

Rice dwarf disease is generally more affected by the vector black-tailed leafhopper or black-tailed electric leafhopper, in the seedling stage should be a good control agent, after transplanting the field stage also needs to be controlled, there are many prevention and control agents, such as Lesben, or some control of rice planthopper can be.

** Words with Ningnanmycin, recognized as the best viral agent.

Promote chemical weeding, eliminate weeds such as "Kanmai Niang", and reduce the source of overwintering insects. Insect control and disease prevention: timely control of the first generation of nymphs breeding in rice fields, and seize the peak period when black-tailed leafhoppers migrate to double-cropping late rice seedling fields and Honda, and eliminate the insect source before the transmission of poison. You can choose 25% thiazinone wettable powder, 100ml per 667m2 25g or 35% taxicarb net emulsifiable concentrate, 100g of 25% taxicarb wettable powder, spray 50L of water, 1 time every 3 5 days, and 1 3 times.