After the grape is hit hard by hail, there will be broken leaf broken leaves, inflorescence ear fall off, more tree wounds and decreased immunity. In addition, the temperature in the affected areas is high, hail continues to be cloudy, air humidity is high, and diseases such as downy mildew, white rot, and gray mold are easily caused. Farmers must do timely work after the disaster.
1. Grapes harvested should be picked and sold as soon as possible. If it is still in fruit growth and development period, it should quickly remove the spoiled ears and grains, and transport it out of the park to reduce the disease infection.
2. Straighten the vines and place them on the surface of the plane, and securely tie them up. Collect and remnant the fallen branches, leaves, and residual inflorescences in order to clear the garden. For new shoots that have been broken and split, they are cut at the wound to reduce the area of ​​the wound and promote wound healing and budding of the secondary shoots. For broken inflorescences, the cuts are too short to be cut from the base, and the inflorescences are not cut to the appropriate points. Branches to reduce the load and maintain the integrity of the ear shape.
3. Spray pesticides in a timely manner to prevent diseases, prevent grapes from being infected with frost, mildew, mildew and other high-temperature diseases in the near future. For the prevention of downy mildew, it can be sprayed with 25% metalaxyl preperoxide WP or 55% enoyl morpholine thiram wettable powder; control white rot, 20% penconazole water emulsion or 32.5% benzol can be used Azoxystrobin sprays are sprayed; for control of gray mold, sprays can be sprayed with 60% methylthiourea WP.
4. Pay attention to drainage. After the disaster, poor soil ventilation, low ground temperature, reduced root activity, weakened tree vigor, severely affect root growth, and is not conducive to restoring tree vigor. Therefore, cultivating loose soil can be properly carried out, and drainage work in low-lying areas can be performed in a timely manner to increase the permeability of the soil.
5. Protect branches and increase leaves. In due course, lightly picking up the heart and adding some good leaves as much as possible to facilitate photosynthesis and promote the healing of wounds on various organs of the plant.
6. Focus on nutritional supplements. Can choose fulvic acid fertilization, combined with foliar spray containing oligosaccharides, alginic acid and other components of the fertilizer to restore the tree vigor. The same is true for greenhouses, because the ground temperature is rapidly reduced, the activity of the root system is deteriorated, and the absorption of nutrients is slowed down.
The bearing structure, fixed film systems and installation of this greenhouse is relatively simple. And due to it, raw material and manufacturing costs are affordable. Except the high strength woven film is higher, other kinds of antidrop film are economical. In general, the comprehensive cost of film greenhouse is lower 30% ~ 50% than the same size and specifications of the other types of greenhouse.
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