Hexagon socket head screws, also referred to as hexagon socket bolts, cup head screws and hexagon socket head screws, are different in terms of their names, but they represent the same meaning. The commonly used hexagon socket head cap screws are also 4.8, 8.8, 10.9 and 12.9. Also known as hexagon socket screws, also known as hexagon socket bolts. Its head is hexagonal and cylindrical. Hexagon Socket Button Head,Hex Socket Button,Button Hexagon Socket,Ss Cup Head Square Neck Bolt Jiangsu Jiajie Special Screw Co., Ltd , https://www.jiajiescrewcompany.com
How to scientifically choose to grow rice varieties should follow the following principles:
(1) Approved varieties with strong resistance.
(2) The same village and town should avoid large-scale planting of a single species, and should mainly promote 3-4 varieties and mix and plant.
(3) Since the climatic conditions this year are not very favorable, you should choose a variety that is earlier in maturity.
(4) Select the varieties sold by regular manufacturers. It is best to purchase the breeding unit to purchase the seed, because the breeding unit understands the characteristics of the variety and adapts to the area. The seed is of good purity and is advantageous for ensuring a good harvest. In addition, when purchasing seeds, you must introduce the climatic conditions, cultivation techniques, planting varieties, disease occurrence and yield performance of your own planting place, in order to facilitate the comprehensive analysis of experts, help you choose the most suitable variety for your cultivation, and also A small number of trial varieties will be prepared for future selection of new varieties.
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