1, Material preparation: Rapeseed cake should be crushed (not too fine to be close to the fineness of sawdust or chaff), sawdust or straw powder, and Youjunkang organic fertilizer starter.
2. Material formula: sawdust can be properly added (straw powder, chaff and mushroom residue can be used instead of sawdust), and the ratio of rapeseed cake to sawdust is 7: 3.
3, operation steps:
①300g Youjunkang organic fertilizer starter can ferment 1 ton rapeseed cake. First, strains and 5- 10 times of corn flour, bran, rice bran, etc. Mix evenly and dilute without water for later use.
② Mixing: firstly, mix sawdust and rapeseed cake evenly. While stirring the rapeseed cake, sprinkle the mixed starter to adjust the appropriate moisture. If it is dry, sprinkle some water properly. Pay attention to the moisture content of raw materials must be controlled at about 50%. The way to judge the water content is: grab a handful of material by hand, see the watermark but don't drip, and it can be scattered when landing. ③ Stacking: generally, it is 1.5 meters high and 2 meters wide to make a fermentation pile with a total volume of not less than 3 cubic meters. After completion, cover the pile with breathable covering, which should be protected from light and rain.
(4) curing: after the fermentation treatment starts, the temperature can be raised to above 60 degrees in about 1~3 days, and the fermentation can be completed by turning once and accumulating for 2-3 times. In the process of fermentation, water should be supplemented appropriately according to the specific situation. After fermentation, all materials are black or dark brown, soft and fragile, slightly fragrant or fermented, and can be used after drying.
Introduction of fertilizer
Any substance that can directly or indirectly supply crops with nutrients, increase crop yield, improve product quality or improve soil properties and fertility by being applied to soil or sprayed on the aboveground parts of crops is called fertilizer.
Those fertilizers that directly supply crops with essential nutrients are called direct fertilizers, while others are mainly used to improve the physical, chemical and biological properties of soil, thus improving crop growth conditions are called indirect fertilizers.
Refer to the above content: Baidu Encyclopedia-Fertilizer