Post-disaster Crop Disease Prevention and Control Technology

Since July, the province has experienced heavy rains along the Huaihe River, Huaihuai North, Jianghuai and most parts of the Yangtze River. The affected crops in the province are 12.43 million mu, and the crop harvested area exceeds 2 million mu. In view of the current situation of crop damage, the following comments are made on the main pest control technologies after the disaster.

I. Rice pest control techniques

According to historical experience, in areas with high rainfall in general, the migratory pests of rice planthoppers and rice leaffolders are relatively heavy after the disaster. In addition, wind and rain can easily cause the rice plant to form wounds, especially rice seedlings with large flooding (or submergence), which is very beneficial to the incidence of Xanthomonas oryzae infestation. In addition, after the floods, as rice seedlings are flooded or flooded, their ability to resist stress will decline, which will also increase the risk of pests and diseases. In view of the above reasons, at present and for a period of time in the future, pests and diseases in rice in disaster-relief areas should focus on the prevention and control of the following pests and diseases:

First, flooded rice seedlings or flooded rice seedlings are to be sprayed immediately after retreating with 60 grams of 20% ronacillus and 40 kg of water, and the occurrence of rice field hoppers and rice leaf roller hoppers will be considered. For example, 10 bundles have 100 rice planthoppers (total nymphs) and 10 bundles have 10 new rice planters, and they also need to add 10% of Dagongchen or 20 grams of lotus root, plus 63.1% of the total. Insect hate or 55% special killing 60 grams or 20.5% 禾 suitable 70 ml uniform spray control.

The second is based on rice breakage period, to carry out an overall prevention and control, focusing on the prevention and control of rice panicle blast (especially along the Huaihe rice glutinous rice, japonica rice), rice smut, rice borer, rice planthopper, rice leaf roller, etc. Pests.

Drug control options:

75% tricyclazole was used to prevent panicle blast, 20% triadimefon prevented rice smut and other heading diseases, and 10% Dagongchen, Jingjing or 20% or 25% wheat rainway prevented rice planthoppers, 40 % Chlorpyrifos (48%) used against rice leaf roller. Peasants' friends should follow the local plant protection station's pest information and, under the guidance of local technicians, seize the major pests and diseases, rationally mix pharmaceuticals, and treat "main" and "secondary" to achieve the purpose of "one time effective."

Second, the affected cotton pest control technology

The current cotton is in the budding period. If the cotton is flooded, under normal circumstances, cotton will be severely reduced or may not be harvested. According to the analysis of the overall situation of cotton pests and diseases in our province this year, the main pests that affect cotton growth are cotton leafhoppers, cotton bollworms in some areas, and cotton thrips and horses along the river. In addition, Spodoptera lituras may occur in later stages (August) in flooded areas.

Control techniques and methods:

1. Control cotton leafhoppers

For plots with cotton leaf loquat plantation rate of more than 5%, immediately use 20% broom to net 30 g or 57% bismuth per acre to spray 50 kg of water on the first 50 ml evenly, and re-send the plot for 7 days before making additional treatment. .

2. Checking and controlling cotton bollworm

Due to the large-scale planting of insect-resistant cotton in recent years, the population of Helicoverpa armigera has dropped significantly in recent years. However, this year, some parts of the local cotton bollworm have increased the hazard, especially non-resistant cotton and cotton seeds from the source of unknown "false insect-resistant cotton", but also pay attention to do a good job of prevention and treatment of bollworm. Control methods: Use 50ml of 4.5% high-efficiency cyanogen chloride per acre or 30ml of 2.5% Dukang to spray 50kg of water evenly. Before and after August 15 (according to the local disease and pest forecast), use 40 ml of 2.5% Dacon or 40% of chlorpyrifos 100 ml or 48% of Bassin 80 ml per acre to evenly spray 60 kg of water.

Third, other major pest control technology

Other pests mainly include corn borer, peanut aphid, Spodoptera litura, Spodoptera exigua, etc.

1. Control of Corn Blast

90% insecticide list 150 grams or insecticide list and BT compound (such as special killing, insecticide) 100 grams per acre mix 10 kilograms of fine soil, thrown into the corn bell mouth.

2. Prevention and control of peanut meal

At present, it is the key period for preventing and controlling peanut pods. Use 40% chlorpyrifos EC 250ml or 48% LS 200ml water 120kg per mu. Manual sprayer removes spray nozzles and penetrates the peanut base one by one. It can also be used in any of the above medicaments. Choose 30 kg of fine sand and sprinkle it evenly on the peanut base and spray it with a sprinkler.

3. Control of Spodoptera litura or Spodoptera exigua

According to historical experience, often after the flood, Spodoptera litura and Spodoptera exigua are generally more severe than normal years, and often occur outbreaks, especially crops such as mung beans and corn that are replanted.

Control methods: Use 40% chlorpyrifos 100 ml per acre or 48% Locust 80 ml or 15% suspension solution 20 ml, spray evenly 50 kg of water. In addition, Spodoptera litura can also face the sun every morning or evening to inspect the cotton fields and remove eggs or newly hatched insect nests of Spodoptera litura. It can be used in middle or lower stage without chemical control, which can reduce labor costs for pesticide application and protect Cotton field ecological environment. Because Spodoptera litura is more resistant than Spodoptera litura, the use of these agents to control Spodoptera exigua should increase the dose. In addition, it is also possible to use bionic reagents such as Diqi, Meixu, and Citaibao to prevent and control the larvae of beet armyworm larvae.

IV. Application Technology

With the amount of foot medicine (667m2 per acre), for the amount of water (40-50kg per mu), the spraying area (control object infestation and damage site) and the water layer (for rice borers, rice planthoppers, In the deep water layer 5 days). Selection time: Generally, spraying should be selected after 4 pm, which can improve the control effect and reduce the impact of high-temperature spraying on the human body.

Fifth, pay attention to pesticide safety

In the summer, the farmers’ friends in preventing and controlling diseases and pests must firmly avoid the high-toxicity and high-residue pesticides that are banned by the state or are about to be eliminated. The second is to wear long-sleeved clothing and trousers, pay attention to safety protection, and use clean water repeatedly after spraying. Wash your face and wash your hands before drinking and eating.

Name: Fungus King seasoning
Spec.: 500 g
Shelf life: 12 months

Ingredients: Vegetable oil, bovine liver bacteria, mushrooms, chili peppers, bean paste, garlic, onions, Chicken Seasoning, ginger, chili, liquor, white sugar, edible flavor spices and so on. 

Storage method: Normal temperature, avoid light storage, open the bag after refrigeration.

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