Method using composite fertilizer to control potato epidemic disease and application

Abstract

The invention discloses a method using a composite fertilizer to control potato epidemic diseases and applications; the composite fertilizer comprises a plant-growth regulator and improved particle lime nitrogen; the plant-growth regulator comprises the following ingredients by mass percent: cyanamide 50-53%, dicyandiamide 2.5-3.5%, sodium phosphate 2.1-2.9%, and balance water, wherein pH value is 4.5-4.8; the improved particle lime nitrogen comprises the following components by mass percent: silicon 0.47-1.4%, oxygen 7.17-11.41%, carbon 18.3-24.33%, aluminium 0.53-1.59%, calcium 39.34-50.26%, iron 0.14-0.7%, magnesium 0.18-0.6%, and nitrogen 18.46-23.01%; the method applies 10-15kg / mu of the improved particle lime nitrogen; in seed soaking, the potato seeds are immersed by the 600-1200 times liquid plant-growth regulator; the method can obviously promote the potato to grow, yield increasing effect is substantial, and yield increasing rate can reach 17.64%; the composite fertilizer provides certain control effects for potato plant early blight, late blight and rot potato disease; in the whole growth period after the composite fertilizer is applied, the potato is good in growth vigor, safe, and no abnormity is spotted, so the method can be promoted and applied in production.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a method and application of a combined fertilizer for preventing and treating potato blight. Background technique [0002] Potato (scientific name: Solanum tuberosum), a perennial herb belonging to the family Solanaceae, with edible tubers, is the third most important food crop in the world, second only to wheat and corn. Potatoes are also called ground eggs, potatoes, potatos, etc., the tubers of Solanaceae plants. Together with wheat, corn, rice, and sorghum, it has become the world's top five crops. Potato blight can cause major crop losses. [0003] Potato early blight is mainly caused by Alternaria solani, which can occur on leaves and can also infect tubers. The diseased spots on the leaves are dark brown, round or nearly round, with concentric ring patterns, and the size is 3-4mm. When the humidity is high, black mold layer symptoms, that is, pathogenic bacteria conidiophore...

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Problems solved by technology

Potato blight could cause major crop losses

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