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Rapeseed cake and water are mixed according to the ratio of rapeseed cake: water = 1: 7.
Or the rapeseed cake is submerged by water, and the rapeseed cake contacts air and water, which is more suitable for fermentation! If the retting time is mushy, it can be diluted to 1/20 with water and then poured!
Pay attention to stir the rapeseed cake and water evenly!
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It usually takes about three months.
1. The stirred fermented soil turns black.
2. Rapeseed cake no longer grows white hair.
3. Rapeseed cake fertilizer no longer stinks and has no taste, indicating that it is ripe.
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four
When applying fertilizer, the general principle is "thin fertilizer and diligent application", and it is not allowed to apply too much at a time.
Fertilization method: As long as it is soaked thoroughly, almost all flowers can be watered without deliberately avoiding the roots of plants.
Application time: once every 20 days as appropriate.