What are the principles, skills and precautions of using sodium nitrophenolate in cucumber?

(1) Function and use: increase yield and improve stress resistance.

(2) Principle of action: Compound sodium nitrophenolate is a powerful cell activator, which can quickly penetrate into plants after contact with them, promote cell protoplasmic streaming and improve cell viability. It has the dual functions of promoting plant cell division and elongation, making crop roots more developed, enhancing photosynthesis, increasing chlorophyll content, promoting crops to effectively absorb fertilizers, assisting crops to grow well at inferior positions, and accelerating wound healing. Can be used in the whole growth period of crops.

(3) Main products: 1.4% sodium nitrophenolate aqueous solution.

(4) Key application techniques ① Application period: spraying at the early flowering stage of cucumber.

② Dosage: 1.4% sodium nitrophenolate solution 5000 ~ 7000 times.

③ Application method: evenly spray the stems and leaves for 3 times with an interval of 7 ~ 10 day.

(5) Precautions ① Do not arbitrarily increase the spray concentration, so as not to affect the efficacy or increase the cost.

② Cucumber cultivated in protected field should be applied in the morning and evening when the temperature in the shed is low, so as to avoid application at noon when the temperature is high, so as to avoid phytotoxicity.

(3) After spraying sodium nitrophenolate, the rain will affect the efficacy, so it should be guaranteed that there is no rain for 24 hours after spraying, otherwise it should be sprayed again.

④ The safety interval is 7 ~ 10 day, and crops can be used up to 3 times per season.