Only the "screwdriver table grooving machine" for common screws, Self-tapping Screws and wood screws can ensure a certain production efficiency. Therefore, the groove "(the part matching with the screwdriver) is made into a cross shape, and the grooving process hinders the development and adoption of high-speed cold spade machines. They are called cross recessed screws. Hexagon Machine Screws,Hexagon Machine Screw,Hexagon Head Machine Screw,Hexagon Head Machine Screws Jiangsu Jiajie Special Screw Co., Ltd , https://www.jiajiescrewcompany.com
The grapes sold in the market are large and round. In fact, the grapes have many small fruits, which are formed by the seed abortion. The mature small fruit seeds are all in the young stage, small and without kernels. So how do you prevent the grapes from producing small grains?
1. Manually remove the ear and remove 1/5 to 1/4 of the flower spike 2 to 3 days before flowering.
2. Management of fertilizer and water during flowering period, to ensure that there is sufficient nutrients in the “critical period of fruit setting nutrition†and “critical period of seed development nutrition†after the initial flowering.
3, regular pollination, in the initial flowering period to the full bloom period, spray 0.20% borax solution every 7 days, even spray 2-3 times, promote pollen tube germination, improve the rate of insemination.
4, summer cut pruning, in the beginning of the flower to the full bloom period, the results of the branch topping, while wiping off all the side shoots, leaving only one tip at the top, 7 days later, leaving the top tip of the 1-2 leaves topping, if germination again 2 secondary tips, wiped out in time.
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