The invention discloses a preparation method and application of a
pesticide preparation for preventing and treating watermelon
fusarium wilt, and belongs to the technical field of
biocide pesticides. The
carbendazim, the
iprodione, the
lotus seed pot extract and the seaweed residues are combined to serve as effective components of the
pesticide, the
pesticide preparation for preventing and treating the watermelon
fusarium wilt is applied to soil which is continuously seeded for many years according to
field experiment data, the
disease index is 7.22%, the prevention effect is 82.44%, the yield of a
single plant is 9.75 + / -0.35 kg, and the yield per mu is 2865 kg. The seaweed residues and the
lotus seed pot extract are mixed to serve as a pesticide synergist, the pesticide synergist is compounded with a basic
chemical agent, the obtained pesticide preparation has a better effect in the aspect of preventing and treating watermelon
fusarium wilt, and the combined effect is better than the effect of independently using the basic
chemical agent, the seaweed residues or the
lotus seed pot extract; the method has practical significance in watermelon
fusarium wilt control and watermelon yield increase.