Applying base fertilizer
Apply seedling fertilizer early. When the leaves are in 6 to 7 leaves, they should be applied to the corn plants by circle application. When fertilizing, they should be 3 to 4 cm away from the plants and cannot be applied to the plants. The time for fertilization should be selected after rainy days. The weather is too dry, it is best to water after the top dressing.
Heavy application of joint fertilizer. Fertilization is usually applied two months after sowing. Generally, it can be applied when the number of corn leaves is 11 to 12, and it should be applied. If necessary, add some fertilizer water, which can improve the utilization rate of fertilizer.
Seedling management
Make up the seedlings. The seedlings are generally required to be in the 3-leaf period. If the transplanted corn seedlings are too large, the survival rate is low. After transplanting, the root water should be poured in time, and the water and fertilizer should be applied 1 or 2 times after the seedlings are replenished.
Pest Control. At the end of corn heart leaf, when the rate of corn mash is more than 5%, the heart can be diluted with biological pesticides and water, and the heart can be filled with 90% trichlorfon 800-1000 times in the exposed period. The liquid can be filled with 60 to 100 strains. The control of armyworm can be carried out by spraying 90% solid trichlorfon 100 g in water on 5 kg of chopped grass or equivalent oil residue to make a poison bait. It can be sprinkled into the corn row in the evening and can also treat the tiger.
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Greenhouse Automatic Proportional Pump
Fertilizer pump mounted directly on the pipe, the kinetic energy of pipe flow to drives the pump to work at a set ratio to suck high erconcentration drug or quantitative fertilizer in to the pump. After mixed with the water and delivered to downstream. No matter How to change the water pressure, Drug or fertilizer will be mixed and discharged according to a certain proportion.
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