The combination of soil plates, root growth disorder, severe drought, water shortage, sun exposure and other reasons are basically similar to those mentioned above, leading to the atrophy of passion fruit. There are many other reasons.
Weather, fertilizer, pests, diseases.
When passion fruit cannot be replenished in time due to high temperature and drought in summer, timely hydration can solve the wilting situation. It is best to cover the fruit bowl with grass to reduce water evaporation and give thin water frequently.
Boron element: when the passion fruit element is deficient, the firearms with unbalanced nutritional contraction can be observed, and it is predicted that the boron is insufficient when Xiaohua wine is vulcanized, and the passion fruit particles will not fill the fruit stalk when boron is insufficient.
Pay attention to preventive methods, flower bud differentiation stage, bud stage, multi-element bovine foliar fertilizer containing bromine, and give organic fertilizer reasonably.
When insect pests occur, the bubble cells of the bitten fruit infected by virus are inhibited, and the dead fruit will also form shriveled fruit. Therefore, we should often go to the orchard, pay attention to the occurrence of pests and prevent them in time.
Passion fruit disease, virus disease and stem rot are all passion fruit withering.
The fruit leaves of plague are transparent when soaked in water and dried, and the fruit will gradually shrink and be destroyed when it bears fruit. Bacteria can re-penetrate with the spread of wind and rain, and re-penetrate many times to form the epidemic of the disease, which is easy to occur in high temperature, high humidity and rainy season. Orchards are prone to infectious diseases due to insufficient sunshine, poor ventilation, poor drainage and excessive rain. Passiflora should be thoroughly removed before planting, and weeds should be destroyed centrally. Dig deep into the soil and spray disinfectant for disinfection and sterilization to reduce the source of infection in the field. When the passion fruit is infected, the diseased leaves should be cleaned, buried or burned in time.
Plant in the wharf with high truck and high soil, and do a good job of drainage in rainy season.
Reasonable cultivation should not be excessive, and the transparency of good ventilation in the hospital should be increased. 4. Chemical control: Sprinkle once before flowering. 1: 1: 200 bordeaux solution or 70% ginseng zinc 800 times solution for prevention. After the onset, use 1000 times bromine cream or 800 times asphalt or nail bed zinc to prevent it.