It is best to fertilize leeks before and after the beginning of autumn.
Fertilizing within the first five days and five days after the start of autumn each year is most conducive to the accumulation of leeks. Premature fertilization can easily cause leek grow long, reduce the plant's resilience, increase the chance of lodging, plus a high temperature and rainy, easily lead to the occurrence of disease, so that Leek rot. Late fertilization will cause leeks to not accumulate enough nutrients because of the gradual decrease in temperature.
In order to ensure the current growth demand of leeks and the future accumulation of nutrients, fertilization should master the principle of “three combinationsâ€, that is, combination of quick-effect fertilizer and slow-effect fertilizer, combination of large amount of element fertilizer and trace element fertilizer, and combination of organic fertilizer and inorganic fertilizer. Spraying a new high fat film greatly increases the effective ingredient rate of the fertilizer.
Select the sunny afternoon, the first stroke once again, every mu of fertilizer will be 40 kg, 3.5 kg of ferrous sulfate, borax 1.5 kg, 2.5 kg of zinc sulfate, 2.5 kg of manganese sulfate, 500 to 750 kg of bean cake mixed uniformly, with 1000 times The phoxim aqueous solution of the phoxim even sprayed the mixed fertilizer thoroughly, and after spreading it evenly, use a half-meter long 5-toothed rake to extend into the bottom of the leechee and scoop along the ridge. Try not to expose the organic fertilizer to the surface. , otherwise it loses the meaning of fertilization. Finally, plunging the water once again, and spraying phoxim or pyrethroid pesticides on the whole leaf to prevent the fly from laying eggs, and pouring the second water every 5 to 7 days. Note that the new leeks planted in that year should be 2-3 cm before the eucalyptus leaves have been cross-sealed and fertilized evenly after a uniform fertilization and watering.
After the second water is poured, it should be topdressed once every 7 to 10 days, with about 40 kg of compound fertilizer as the main ingredient. When it is cold, it will stop the water and grow long enough to allow the leeks to accumulate nutrients for this winter and next spring. Growth needs.
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