The invention discloses a nutritional agent for preventing and treating
plant seed and
bud decay as well as a preparation method and application of the nutritional agent. The nutritional agent is prepared from the following raw materials in parts by weight: 3-7 parts of
polyaspartic acid, 1-5 parts of
phenylalanine, 5-12 parts of composite
sodium nitrophenolate, 11-19 parts of
sodium butyrate, 13-21 parts of
glucomannan, 15-25 parts of tea
polyphenol and 50-60 parts of water The method comprises the steps: heating water; adding the
sodium butyrate and the tea
polyphenol, adding the composite sodium nitrophenolate and the
glucomannan and then adding the
polyaspartic acid and the
phenylalanine; and carrying out ultrasonic treatment. The nutritional agent is abundant in
nutrient, is capable of promoting
plant growth, strengthening the
plant immunity, effectively preventing the phenomenon of plant seed and
bud decay in a extremely humid environment, promoting yield improvement and shortening the growth period, the plant has multiple ecological regulation functions, such as the
stress resistance, the
cold resistance, the
drought resistance and the
disease and pest resistance, and root-knot nematodes,
root rot and
bacterial wilt can be effectively inhibited. According to the nutritional agent, cucumber can be straight in shape, the
sugar content of the cucumber can be improved, and the cucumber is crisp and sweet to eat, and storage-resistant.