What's the reason why chili dead plants
1, pathogen infection
Pathogen infection is the main cause of pepper seedlings death.Diseases caused by fungus infection, mainly in the early stage of seedling stage and engraftment is damping off and damping off and disease;Phase into plant mainly for the disease.
2, several years of continuous cropping
Several years of continuous cropping plant pathogens accumulate in the soil, base, germs from roots or stem base after the wound invasive plant reproductive harm, under the condition of appropriate spread, dead plants caused by large area.
3, seeds or seedlings pathogen
Seeds or seedlings the carrier is the main way that disease spread over a long distance, is also a new vegetable plantation source of infection in the early of the disease.Before sowing or transplanting do not pay attention to disinfection treatment of seeds, seedlings, also provides favorable conditions for disease spread.
4, seedlings, planting form
Practice has proved that nutrition substrate seedling lighter than nutritional soil seedling seedling disease, application of rotten without fermentation organic fertilizer plot heavy disease, engraftment flat when sown in onset over ridging planting.
5, unreasonable irrigation methods
The unreasonable irrigation methods created favorable conditions for disease occurs.Flood irrigation and irrigation frequency more plots in disease significantly heavier, using drip irrigation under membrane were basic pathogenesis or not.
6, fertilization is not reasonable
Too much nitrogen fertilizer rate under phosphorus and other trace elements, and the application of rotten machine of fat or burn caused by flood irrigation root and retting, all can make plant disease resistance drop, disease worse.In addition, humid and rainy climate, field density, illumination, water more, field water, all can aggravate the disease.
Chili dead plants with what good
1, a rotation
According to the specific situation rotating their crops, in order to reduce pathogenic bacteria in the soil base.Conditional with rotation of grain, cotton, above 3 years.
2, seed disinfection
For purchase of quarantine inspection, with 1% copper sulfate seed 5 min, salvage and add a small amount of plant ash, can sow;With 72% general rick water soaked with 12 h, remove to wash after dry, seeds sprouting;Also can use 1% formalin solution soaked with 30 min or 25% armor frost spirit wettable powder 800 times liquid seed 20 min.This disinfection ways, are attached to the seeds can kill germs.
3, soil disinfection
With copper sulfate, TMTD on soil disinfection treatment such as potions, beat 1000 times liquid spray ShiPu after emergence in the seedling disease prevention.Chilli field of ridging transplanting planting hole when potions, can choose transplanting spirit, evil mildew spirit, etc., can also be filled with potions root after engraftment.
4, strengthening cultivation management
Increasing organic fertilizer application, under phosphorus and trace element fertilizer, enhance plant disease resistance;Water in moderation, prevent flood irrigation;The machine is in a timely manner, digging, in order to increase soil permeability.
5, control
Chili seedling with 72% at 600 ~ 800 times water rick fill root, prevent the happening of the seedling blight, blight;After engraftment slow seedlings, with evil mildew wettable powder 3000 times or spirit wettable powder 600 times water resistance, even 2 times, in chili seedling blight, cataplexy disease prevention and control effect is better;Pepper blight disease or disease before beginning see period with 25% o, missy of suspending agent, 25% ene oxime bacteria of ester oil 800 ~ 1200 times liquid, 50% enke (dimethomorph wettable powder 1500 times liquid or 72% g Lou wettable powder 600 times liquid spraying, spraying once every 10 d, after 3 times at most, the hot pepper disease prevention and control effect is better;Summer heat and rainy season, chili toppings water and 96% copper sulfate before 45 kg/hm2, water, and then pepper disease prevention, such as stem JiFuBing effect is better;Root rot disease and early before available when 2.5% comfortable music 1500 times liquid filling root, catagen found strain prompt remoal.
