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Vegetables should be followed by quick-acting fert
[2018-11-27]
After being frozen, greenhouse vegetables should be followed by two kinds of fertilizers, such as quick-acting nitrogen fertilizer and phosphorus-potassium fertilizer, to promote the growth of vegetable plants.
Before the low temperature, it can spray 0.2%-0.3% potassium dihydrogen phosphate aqueous solution 1-2 times to improve the cold resistance or 400-500 kg of thin human and animal manure water per acre, which can reduce the freezing degree of the soil and reduce the freezing damage.
Spreading 50-100 pieces of fire ash or plant ash between the vegetable compartments, it can not only prevent cold and freeze, but also play a role in increasing the application of potassium fertilizer, and has a good effect on the control of cruciferous vegetable root rot.
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