Organic fertilizer for preventing and treating root-knot nematode and preparation method thereof

The invention relates to the technical field of organic fertilizers, and discloses an organic fertilizer for preventing and treating root-knot nematode and a preparation method thereof. Comprising the following components in parts by weight: 25-60 parts of an organic alkali fertilizer, 3-7 parts of an earthworm cast and earthworm egg compound, 2-4 parts of a phosphate fertilizer, 2-4 parts of a potash fertilizer, 2-5 parts of alginic acid powder, 0.1-1.5 parts of amino-oligosaccharin, 0.01-0.5 part of a matrine aqueous solution, 7-16 parts of a granule mixture, 2-4 parts of a biological agent, 1-3 parts of a microbial decomposition agent and 1-4 parts of an alkaline regulator. According to the method, the oxygen content in the soil is reduced in an auxiliary manner, so that the absorption and utilization of the root-knot nematodes to oxygen are inhibited, and the growth of the root-knot nematodes is inhibited. 本发明涉及有机肥料技术领域，且公开了一种防治根结线虫的有机肥料及其制备方法。包括以重量份计的以下成分：有机碱肥25份-60份、蚓粪蚓卵复配物3份-7份、磷肥2份-4份、钾肥2份-4份、海藻酸粉2份-5