This is mainly caused by physical obstacles: First, nitrogen fertilizer is applied to the base fertilizer to promote the growth of the zucchini, and the area of ​​the leaves is increased and the shade is severe. The second is that the temperature in the greenhouse is too low or too high. Third, there is insufficient moisture or humidity in the greenhouse. In such an environment, the vitality of pollen and style will be greatly inhibited. To this end, the following four aspects should be taken for prevention and control.

Improve the drainage and irrigation conditions in the shed so that the water can be drained and the dark water can seep. When you start squashing, if you experience a drought for about 10 days, then furrow irrigation, but you must prevent flooding.

Phosphorus and Potassium fertilizers are generally sprayed once every 5-7 days a 0.2-0.3% potassium dihydrogen phosphate solution.

The artificial pollination is performed at 9-10 am every day at the peak of the male flower opening period. The male flower is removed and the corolla is removed. The anther is gently applied on the stigma of the pistil. A male flower can grant 3 female flowers.

Hormone treatment One can use 20 - 30 mg / l of 2,4-D in the morning of flowering, with a brush pen and phlegm applied to the pedicel or stigma, ovary, but to prevent splashing liquid on the stems and leaves . The second is to spray 40-50 mg/L of tomato spirit on female styling. The third is to remove old leaves and remove stray flowers. The foot and leaves of the base should be properly removed. At the same time, excessive female flowers and excess male flowers should be supervised.

Medical Elastic Bandages

ELASTIC BANDAGE

Structure and composition: It is woven by chemical fiber and yarn in plain weave.

Product performance: Non-toxic, medical usage and environmentally friendly, using special and unique technology, through multiple processes. So that the mesh and elasticity of the product are always uniform, and the permeability is good.

Model specifications: Plain weave. The specification width is 5CM / 7.5CM / 10CM / 12CM / 15CM / 20CM, and the length is any fixed length between 3-20M.

Packing: Each roll packed with OPP candy paper, the outer layer is 5-layer double corrugated kraft paper box.

Gauze Bandage,Medical Bandage,Elastic Bandage,Medical Elastic Bandages

Shaoxing Gangfeng Hospital Products Co.,Ltd. , https://www.gangfenggauze.com