Family flowers without insecticides
1. Locust: Use 5 grams of detergent, 1.2 kilograms of water, spray after fully stirring, spray once every 3 days, use 2-3 times in succession, the insecticidal rate can reach 100%.
2. Snail: The beer is poured into a shallow dish and put on the ground and basin soil. The snail sniffs its aroma and it will drown into the dish and drown.
3. Ants: After crushing the garlic petals, dig 3-4 points in the pots and bury them in pots and soils. After 2-3 days, the ants, cockroaches and nematodes in pots and soils will disappear.
4. Starscream: After being ignited with a mosquito coil containing pyrethrum, it will be placed in a blue pot and then closed with plastic tubing. After being smoked for 1 hour, it will kill the red spider mites and adults. (5) scale insects: 500 grams of mature eucalyptus fruit, soaked in water 1 kilogram for more than 1 month, juice for use. In the late spring and early summer with 1:1000 times the liquid to prevent; if found small scale insects, that is, with 1:500 times liquid killing, 5 days with 1, once every 3 times, you can kill small scale insects.
Venlo structure is a popular one at present. This architecture uses horizontal girder as main bearer, forming a stable structure with columns. There is consolidation between horizontal girder and column, and hinge is used to connect column and foundation.
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 the hollow double-layer or multilayer PC board.
PC board is mainly made of PC/PET/PMMA/PP materials, it need sun screen coating to resist ultraviolet resist and ageing, and it is also required to be anti condensation and antidrug.
As a kind of light material, use PC board can greatly reduce the weight of greenhouse structure, and corresponding reduced the size of the steel frame, which saving the cost of steel.
Pc Board Venlo Greenhouse,Venlo Greenhouse,Venlo Type Pc Sheet Greenhouse
JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.skyplantgreenhouse.com