The epidemic disease occurs in the adult stage, and leaves, branches, stems and fruits can be affected. The leaves were infected, the lesions were nearly round, the central dark brown, and the edges were yellow-green. The onset of fruit originated in the peduncle. It was a dark green, water-soaked lesion. Afterwards, it turned soft and rot. When the humidity was high, a white mold layer was produced. After drying, it remained as a stiff fruit on the plant. The branches were infected and showed round brown streaks. The stems are infested, the vascular bundles are brown, and the plants quickly wither until they die. The disease depends on the spread of soil and air and comprehensive prevention and control measures must be taken.
Reasonable irrigation in July and August is the flowering period of hot peppers. If improper irrigation or slight carelessness after heavy rain, it will lead to the rapid spread of the disease, resulting in a large number of deaths. It is necessary to strictly control irrigation, avoid flood irrigation and string water irrigation. If you have a good sensation, you can not water or light irrigation.
When copper sulphate is used to irrigate the drought in the field and it is really necessary to apply irrigation, it should be combined with irrigation to control the occurrence of disease. The method is to apply 1-8% kg of copper sulphate 98% copper before irrigation. Copper sulfate can be evenly spread on the ground (for even use, add some sand), and then light water. Or when watering, dissolve the dissolved copper sulfate evenly at the nozzle. After applying water, copper sulfate should be applied at the outlet to prevent the drug at the outlet from becoming less susceptible to disease. 25% Rhizoctonis can also be applied during irrigation.
Spraying pesticides to prevent and treat diseases in the field can be sprayed with 64% antivirus, 400-500 times M8 wettable powder or 800 times 25% thioredoxin, and 1000 times 50% toxic copper, followed by 75% mannosulfate injection Wettable powder 400-500 times, 60% DC800 times, 500 times enemy liquid, etc., have good results.
Glass Venlo Greenhouse is Spire-type glass design, design and installation of windows when more convenient and easy. Its roof slope andle can be appropriately according to the local real climate change the environment.
In Venlo greenhouse, foundation is made of reinforced concrete and the side wall is made of brick or reinforced concrete plate. the steel frame always use hot dip galvanized light steel. Roof beam adopts horizontal girder structure and using herringbone connection. The horizontal girder bears 2 or more roofs, which is made of aluminum alloy. This material is used as roof structure material and also glass inlay material. Other beams using gutter style to minimize the section. Delighting material of the roof and side wall using 4 mm thick float glass.
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