Main plant diseases and insect pests and technology of prevention and cure are in tomato a lot of disease can appear in the process that grows tomato, this moment how better undertake is on guard, teach below teach everybody to be on guard the technology of disease: (1) main disease: Have tomato late epidemic disease, tomato early epidemic disease, tomato is Brown and corrupt ill, tomato bacterium nucleus is ill, tomato gray mold, tomato blueness withered disease, tomato soft rot, tomato wither
Can appear in the process that grows tomato a lot of disease, this moment how better undertake is on guard, teach below teach everybody to be on guard the technology of disease:
(1) main disease: Have tomato late epidemic disease, tomato early epidemic disease, tomato is Brown and corrupt ill, tomato bacterium nucleus is ill, tomato gray mold, tomato blueness withered disease, tomato soft rot, tomato blight.
① tomato late epidemic disease:
This disease is kill leaf, bine and fruit. Begin from Xie Jian or Xie Yuan more on blade, ill spot appearance is irregular, zhou Yuan is not apparent, sap green is shown first, shape of water be soiled, become Brown after. Ill spot can expand to whole or largely blade, when moisture, in disease be good at boundary, grow other people of account of circuit white mildew (sporangium and Bao bursa stalk) dry when, ill leaf is rapid and sere, on bine and fruit handle, ill spot is dark Brown, cave a bit, the edge is not clear. Fructification ill spot is irregular form, brown or black Brown, shape of Chang Zunyun grain is outward and patulous. When moisture, other people of few and far between white mildew account grows on ill spot. Hard fact of ill fruit quality of a material, spot range is coarse, not smooth.
This disease sends mildew of ill epidemic disease to invade by fungus catch cause, come on appropriate temperature is 18~22 ℃ , air relative humidity is in 85% above, namely the happening that microtherm moisture is helpful for this spot and popularity. Local situation low-lying, catchment is undesirable, Love Shanghai is the same as city forum The seeper inside cropland, nitrogenous fertilizer is overmuch, the way corp is growing is dense, ventilated and undesirable, morning and evening is misty, rainy season is early, rainwater is big wait all easy the happening that causes this disease and popularity.
Method of prevention and cure: Choice relief is higher, the vegetable plot of not easy seeper is cultivated. Seed selection is appropriate the disease-resistant breed of this locality. Reasonable fertilization, add Shi Lin, potash fertilizer. Spray antiseptic: 80% gush are overcome but wet sex powder;78% of 800 times fluid Keboke is wet sexual powder zinc of manganese of Mill of Lei Duo of;58% of 500 times fluid;75% of 500 times fluid 100 bacterium are clear but wet sex powder 500 times fluid. 10 days every or so spray 1 times, in all 2~3 second.
② tomato early epidemic diseas[……]