Special foliage fertilizer for preventing and treating early spring leaf blight of Merlot grape variety

Abstract

The invention provides a special foliage fertilizer for preventing and treating early spring leaf blight of Merlot grape variety, which is especially suitable for the leafing state of the Merlot grape variety in spring. The special fertilizer is prepared from the following components in parts by weight: 25-30 parts of potassium dihydrogen phosphate, 55-68 parts of urea, 3-5 parts of borax, 2-5 parts of zinc sulfate and 2-5 parts of manganese sulfate. The special fertilizer provided by the invention has the advantage of reasonable nutrient matching, and satisfies the nutrient requirements for the Merlot grape variety in the leafing stage of the nutrient-deficient period in spring. By spraying the special foliage fertilizer, the foliage can absorb nutrients supplied to the plant and go through the nutrient-deficient period quickly. The special fertilizer effectively prevents and treats early spring leaf blight, and ensures the normal growth of the plant.

Description

technical field [0001] The invention belongs to the field of crop nutrients, and in particular relates to a special fertilizer for foliage used for preventing and treating early spring dead leaf disease of Merlot grape varieties. Background technique [0002] Due to its outstanding quality, the wine grape variety Merlot has been widely valued by people in the international wine industry, and it has become one of the red wine varieties with the fastest growing planting area in the world. In recent years, with the rapid growth of dry red wine consumption, the planting area of ​​Merlot varieties in various regions of the country has been continuously expanding. However, in the planting area of ​​the Merlot grape variety, some plants of this variety suffered from early spring leaf blight in the second year after planting at the stage of leaf expansion after germination-the leaf color was light green or light yellow-green, and lost luster, and the new shoots Growth is severely r...

AI Technical Summary

Problems solved by technology

However, in the planting area of ​​the Merlot grape variety, some plants of this variety suffered from early spring leaf blight in the second year after planting at the stage of leaf expansion after germination-the leaf color was light green or light yellow-green, and lost luster, and the new shoots severe growth retardation

The edge (periphery) of the leaf is dry and develops from the periphery inward and the depression of the petiole. The leaf is rolled backward. In severe cases, the leaf is dry and falls off and dies. In severe cases, only the top 1-2 new leaves do not show disease symptoms, but as the shoots grow and the leaves unfold, the disease symptoms appear on the new leaves. From the perspective of the whole plant, the more new branches, the more serious the disease, even Plants without disease also have the phenomenon of weakening tree vigor with the increase of output. Some growers have suffered serious economic losses and have to replant other varieties.