The invention discloses base
fertilizer for a water chestnut planting field. The base
fertilizer is characterized by being prepared from the following raw materials in percentage by
mass: 28 percent to 32 percent of composted cattle pen
manure, 8 percent to 12 percent of
phosphorus fertilizer, 2 percent to 4 percent of
zinc-
boron fertilizer, 28 percent to 32 percent of
plant ash, 20 percent to 24 percent of oilseed cake and 4 percent to 6 percent of an auxiliary material. The auxiliary material comprises the following components in parts by weight: 14 to 20 parts of modified bamboo
powder, 4 to 8 parts of
vermiculite powder, 5 to 9 parts of
sepiolite powder, 2 to 4 parts of
sodium humate, 2 to 4 parts of
straw powder and 3 to 5 parts of turf. The modified bamboo powder is prepared by adopting the following process: stirring N,N,N-
trimethyl chitosan, glacial
acetic acid and water; dropwise adding a
silver nitrate solution under a stirring state; then dropwise adding a
sodium borohydride solution and stirring to obtain a prefabricated material; stirring
gelatin and the water; adding
sodium hydroxide and stirring; adjusting the pH (Potential of
Hydrogen) value to be 7.1 to 7.5; adding
succinic anhydride and stirring;
drying and crushing; adding a
silane coupling agent, the bamboo powder, the prefabricated material and
toluene; raising the temperature, stirring, washing,
drying and crushing to obtain the modified bamboo powder.