The invention relates to a liquid
fertilizer, and specifically relates to a
water soluble liquid
fertilizer containing macroelements, wherein anaerobic
fermentation liquid is taken as the basic liquid of the
fertilizer. In the prior art, the liquid fertilizer production has the disadvantages of large
water consumption, high production cost, and single functional product. In order to solve the problems mentioned above, a formula of a
water soluble liquid fertilizer is designed, the
fermentation liquid is taken as the basic liquid, macroelements (N, P, and K), medium elements (Mg and Ca), microelements (Zn, Fe, B, Mo, and Mn) and organic substances are compounded and added, thus the liquid fertilizer has a comprehensive nutrients and is capable of supplying sufficient
nutrition, moreover, the water resource is saved, and the
raw material cost is reduced. The anaerobic
fermentation liquid is subjected to secondary fermentation and is fully aged so as to kill the harmful
bacteria and
insect eggs, while at the same time the original active substance and beneficial bacterium colonies are preserved. The fertilizer can release the
soil fertility, can be easily absorbed by the plants, is capable of promoting the
plant growth, has the advantages of high
nutrient content, comprehensive functions, environment-friendliness, low production cost, and user-friendliness, and is capable of increasing the
crop yield and improving the agricultural product quality after long term use.