Orchards are more or less infected with pests and diseases during successive years of production. In the late autumn and early winter, insecticidal sterilization should be based on prevention, prevention and control, so that the fruit trees are not affected by pests and diseases, and promote the growth of fruit trees.
Spray sterilization, the ratio of the spray is ferrous sulfate: quicklime: water = 3:3:100. Spray and spray evenly when spraying, with the spray. It is worth noting that it can't be sprayed in rainy days, it can't be sprayed in the windy days, it can't be sprayed when there is dew in the morning and evening, and the high temperature weather can't be sprayed. Otherwise, it is easy to cause the fruit tree to cause phytotoxicity or reduce the efficacy. It is best to spray it after 8-10 am and after 3 pm.
In order to eliminate and eliminate the breeding and breeding of pests and diseases, the orchard should be thoroughly cleaned after the fruit trees enter the dormant period. The dead leaves with pests and diseases in the garden are cleaned and burned or buried deeply.
Autumn fruit trees, whether purchased or exported, must pass the physical quarantine of the phytosanitary department. All seedlings with pests and diseases will be destroyed, and those who pass the test can be traded and cultivated.
Low-iron glass, also ultra clear glass, is a type of high-clarity glass that is made from silica with very low amounts of iron. This low level of iron removes the greenish-blue tint that can be seen especially on larger and thicker sizes of glass. Low-iron glass is used for aquariums, display cases, some windows, and other applications where clarity is desired.
Tempered or toughened glass is a type of safety glass processed by controlled thermal to increase its strength compared with normal glass. Tempering puts the outer surfaces into compression and the interior into tension. Such stresses cause the glass, when broken, to crumble into small granular chunks instead of splintering into jagged shards as plate glass (a.k.a. annealed glass) does. The granular chunks are less likely to cause injury.
Tempered Glass ultra clear glass is a kind of safety glass, with low rate of explosion, high transmittance, to meet some request which need high transmittance. For some printed or back painted tempered glass, ultra clear glass as for subtract can provide the truest color.
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