Preparation method of special fertilizer for lettuce

Abstract

A preparation method of a fertilizer special for asparagus lettuce comprises the following steps: raw materials metering, mixing, raw material melting, liquid material slurry filtration, slurry spraying, cooling and granulation, granule screening, and finished product packaging, the fertilizer comprises the following components and raw materials: 16-17 parts of urea, 4-5 parts of monoammonium phosphate, 18-20 parts of potassium chloride, 3-4 parts of calcium oxide, 2-3 parts of zinc sulfate, 1-2 parts of boron fertilizer and 2-3 parts of sodium nitrophenolate. The melted and granulated special fertilizer is uniform in release of fertilizer efficiency, is relatively long in effect time, is not easy to scatter during storage and transportation and use processes, and is less in loss, by applying the fertilizer, asparagus lettuce plants are vigorous in growth vigour, the plant height is 60cm, the stem diameter is 8cm, the yield is high, the rough weight per plant is 2kg, the net weight per plant is 1.6 kg, the net vegetable rate can reach 80%, the product is green in leaf and stem, not easy to bolt, good in commercial appearance, high in seal price, easy to sale, and capable of achieving better economic benefit.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and relates to a method for preparing a special fertilizer for lettuce. Background technique [0002] Lettuce is an annual or biennial herb of the genus Lactuca in the Compositae family, also known as lettuce, lettuce, and lettuce. It was introduced into my country through West Asia and is currently widely cultivated throughout our country. Lettuce is divided into stem lettuce and leaf lettuce according to its edible parts. The edible part of stem lettuce is mainly the flower stem, the stem is fat and tender, and the edible part of leaf lettuce is lettuce leaf; according to the shape of its leaves, it is divided into round leaf lettuce and lettuce. Leaf lettuce and round leaf lettuce have obovate leaves, thick stems, good quality, pointed leaf lettuce leaves have a pointed apex, stems are stick-like, the lower part is thick and the upper part is tapering; lettuce is one of the most common veg...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem that in the process of cultivating lettuce, it is difficult to grasp and control the amount of common chemical fertilizers used by people, unbalanced fertilization, easy occurrence of excessive or insufficient nutrients, resulting in soil compaction and plant deficiency or salt damage, which affects the cultivation yield and quality. Problem, a kind of lettuce special fertilizer preparation method is provided, and its technical scheme is: