Since June this year, many places in Hunan have been flooded with heavy rains. The precipitation intensity is large, the duration is long, and the scope of impact is wide. The vegetable bases in the province have different levels of flood disasters, which are severely flooded for up to 24 hours. , causing heavy losses to planting cooperatives and farmers. In order to minimize disaster losses and quickly resume post-disaster production, the following countermeasures are proposed.
Suggestions for disaster relief of vegetables before and after floods
First, timely harvest vegetables
For mature vegetables soaked in large water, due to the high humidity in the field, many pathogens, and high temperature season, it is easy to rot and lose the commodity. It is necessary to promptly collect the listing, minimize the loss after the disaster, and ensure the effective supply of the market.
Second, pay close attention to clearing ditch drainage
Grasp the drainage ditch, dredge the ditch, the ditch and the lumbar groove, remove the waterlogging, and prevent the water from accumulating in the field. For plots with low terrain and poor drainage, it is necessary to arrange power drainage, grab time to remove waterlogging, reduce groundwater level, reduce flooding time, reduce physiological diseases caused by water accumulation and mites, and promote vegetable root regeneration. Reduce the degree of damage.
Third, repair infrastructure
Timely reinforcement of vegetable greenhouses, installation of greenhouse film, shade nets and insect nets and other facilities and materials to prevent damage to scaffolds and other materials by strong winds and heavy rain. For large-scale shed facilities where the rainfall is large and the immersion time is long and the foundation is not strong, it is necessary to repair and maintain in time to prevent the shed from collapsing.
Fourth, grab the recovery management
For the fields that are slightly affected by the disaster, the vegetables with the value of the management and protection should take the time to reinforce the fallen vegetables and properly cultivate the roots. After the flood, the artificially splashed water should be washed in time to wash the soil adhering to the stems and leaves. After the rain, the soil is squashed, and the film is covered with the film to be pulled off. When the soil is slightly dry, the soil is ploughed in time to improve the soil structure, increase the soil aeration, and improve the root activity.
Spraying foliar fertilizer in time, after the rainstorm, the ability of vegetable roots to absorb water and fertilizer is poor. At this time, foliar fertilizer should be sprayed in time. 0.2% potassium dihydrogen phosphate + 0.5% urea solution can be used to make vegetables recover quickly. vitality. For the cultivation of vegetables or nursery sheds, it is possible to adopt rain-proof cultivation (that is, directly covering the top film or directly covering the sunshade net or a film plus a net) to shade and cool down, to prevent rainstorms and to be exposed to high temperature and exposure after rain.
Fifth, strengthen pest control
After the flood, the field temperature and humidity are large, the plant resistance is weak, and it is easy to cause pests and diseases. Especially after the rain, the temperature suddenly rises. The diseases of melons, solanaceous vegetables, anthracnose, blight and other diseases are prone to occur and spread. Drug protection and prevention.
Disease prevention and control measures are mainly to carry out rooting and disinfection of medicaments. The agent has lime 100 kg/mu, sulfur 5 kg/mu, 3% methyl carbaryl 700 times liquid, 70% thiophanate 600 liquid, 23% lycopene 600 times liquid, and 58% metalaxyl manganese. Zinc 700 times solution, 50% dimethomorph 2000 times solution, 20% flumorph 1000 times solution (64% antivirus 矾 500 times solution, 58% Redolmer 600 times solution), 70% chlorothalonil 800 times solution The above agents should be used interchangeably once every 5-7 days for 2-3 consecutive times.
Leaf disease such as downy mildew and disease can be controlled by 80% dimethomorph 600 times solution, 66.5% downy mild acid hydrochloride 800 times solution or kelu 500 times solution spray; anthracnose and powdery mildew can use 10% benzene Ethermazole (oxazolyl, Shigao) 1500 times solution or Lunasen 1500 times solution or 70% thiophanate-methyl 700 times solution or 25% ether oxystrobin 1500 times solution spray control; pests such as B. tabaci 50% clothianidin 8000 times solution or 10% nitenpyram 2000 times solution or 4% acitretin or 100 grams / liter of bifenthrin 2000 times solution or 24% spirotetramat ethyl ester 1500 times solution Spraying; Bean wild carp, Plutella xylostella, Spodoptera exigua, Spodoptera litura, 20% liquid hydrazide 1500 times solution or 5% chlorantraniliprole 1500 times solution or 10% cyanamide amide 3000-4000 times solution Bifenthrin spray control. Spray control should be carried out on sunny days to prevent rainwater from scouring.
Sixth, grasp and rush to broadcast fast-growing leafy vegetables, autumn delay consequences vegetables
If the flooding time is too long, the vegetable fields that cannot recover normal growth and lose the salvage value, clean the garden in time, strengthen the soil disinfection work, and spray 150-200 kilograms of lime per acre to prevent the spread of soil-borne diseases. The sputum should be carefully arranged, and the vegetables with high economic benefits such as fast-growing leafy vegetables and autumn-expanding fruits and vegetables should be seized.
The fast-growing vegetables that are rushed to broadcast include fast vegetables, lettuce, oily vegetables, Chinese cabbage, auricula, cabbage, Guangdong cabbage, spinach, leeks, heat-resistant celery, etc.; the late-breaking vegetables include green beans, kidney beans, peppers, and tomatoes. , scorpion, cucumber, small pumpkin, loofah, bitter gourd, etc., we must pay close attention to seed preparation and seedling work.
Main technical measures for disaster relief of vegetables before and after floods
In order to minimize disaster losses, quickly restore post-disaster production, and ensure the normal supply of vegetables after the disaster, the following measures are proposed.
First, timely Qingyuan rushing
If the flooding time is too long, the pepper field that cannot recover normal growth and lose the salvage value should be cleaned in time, the sun will be deepened, the soil disinfection work will be strengthened, the lime will be 150-200 kg, or the soil will be 70% wet. Powder 3-5kg, then deep turn 30-40cm, can effectively prevent the spread of soil-borne diseases. The sputum should be carefully arranged, and the vegetables with high economic benefits such as fast-growing leafy vegetables and autumn-expanding fruits and vegetables should be seized. The fast-growing vegetables that are rushed to broadcast include fast vegetables, lettuce, oily vegetables, Chinese cabbage, auricula, cabbage, Guangdong cabbage, spinach, leeks, heat-resistant celery, etc.; the late-breaking vegetables include green beans, kidney beans, peppers, and tomatoes. , scorpion, cucumber, small pumpkin, loofah, bitter gourd, etc., we must pay close attention to seed preparation and seedling work.
Second, pay close attention to clearing ditch drainage
Grasp the drainage ditch, dredge the ditch, the ditch and the lumbar groove, remove the waterlogging, and prevent the water from accumulating in the field. For plots with low terrain and poor drainage, it is necessary to arrange power drainage, grab time to remove waterlogging, reduce groundwater level, reduce flooding time, reduce physiological diseases caused by stagnant water and mites, and promote the growth of pepper roots and reduce The extent of the damage.
Third, grab the recovery management
For the gently affected pepper fields, take the time to reinforce the fallen peppers, and properly cultivate the roots and remove the grass in time. After the flooding, the soil is compacted. The film covered with the mulch film should be pulled off. When the soil is slightly dry, the soil should be ploughed in time to improve the soil structure, increase the soil aeration and improve the root activity.
Spraying foliar fertilizer in time, after the rainstorm, the ability of the roots of pepper to absorb water and fertilizer is poor. At this time, the foliar fertilizer should be sprayed in time. Generally, 0.2% potassium dihydrogen phosphate + 0.5% urea solution can be used to make the pepper recover quickly. vitality.
Fourth, strengthen disease prevention
After flooding, the field has high humidity and low oxygen content in the soil. It is easy to cause pepper roots, which causes root rot to occur in large numbers. Because of the sudden increase in temperature after the rain, it is easy to cause diseases such as epidemic diseases, anthracnose diseases and scab diseases. Spray protection and prevention should be timely.
Should be timely applied with chemicals to prevent capsicum roots, can be mixed with 25% azoxystrobin suspension 1500 times solution with 14% solution of lycopene 500 times, or 5% oxystazole suspension 1000 times solution mixed with 70% The 1500 times solution of the mildew WP can be irrigated with 12% benzoquinone sulphonate suspension 1000-1500 times solution or 25% prochloraz emulsifiable concentrate 1000-1200 times, once every 10 days, 2 times.
-86C Freezer
86C Freezer,Low Temp Vaccine Storage Fridge,Lab Low Temp Vaccine Storage,Low Temperature Deep Freezer
Guangdong Widinlsa International Co.Ltd , https://www.gdwidinlsa.com