A kind of compound nutrient solution for leafy vegetables and application method thereof

Abstract

The invention discloses a compound nutrient solution for leafy vegetables and an application method thereof, which are prepared from the following raw materials by weight: 120.0-150.0 parts of water, 8.0-15.0 parts of potassium chloride, and 3.0-5.5 parts of magnesium sulfate , 2.6-4.3 parts of zinc sulfate, 1.0-3.0 parts of potassium nitrate, 3.8-5.6 parts of calcium nitrate, 0.6-1.3 parts of ammonium dihydrogen phosphate, 0.4-1.1 parts of potassium dihydrogen phosphate, 8.0-15.0 parts of urea, 3.5-5.5 parts of Potassium tartrate, 3.5-5.8 parts of calcium absorption enhancer, 3.0-6.5 parts of chelating agent and 5.0-9.5 parts of trace elements, calcium absorption enhancer includes γ-polyglutamic acid and shell in a mass ratio of 1:2-1:3 Polysaccharide, the chelating agent includes erythritol, mannitol and sorbitol in a mass ratio of 1:1:2-1:2:4; the application method is to use the compound nutrient solution for leaf vegetable hydroponics , the compound nutrient solution is supplied 2-4 times a day, and the time of each supply is 20-40min. The invention has the advantages of being able to supply leafy vegetables with good nutrient substances, especially calcium substances, improving the quality of vegetables, and obtaining high-calcium vegetables.

Description

technical field [0001] The invention relates to the technical field of plant nutrient solution, more particularly, to a compound nutrient solution for leafy vegetables and an application method thereof. Background technique [0002] my country is the world's largest producer of vegetables, with an average annual vegetable possession of more than 300 kilograms, which is three times the world's per capita possession of 102 kilograms. The annual planting area of ​​vegetables in my country reaches 13 million hectares, with an annual output of 405 million tons. Therefore, the cultivation of leafy vegetables is large, occupies a lot of farmland, and consumes a lot of human and material resources. It is an inevitable trend to develop soilless cultivation technology for leafy vegetables. Hydroponics is a new type of soilless cultivation method. Part of the root system grows in the nutrient solution layer, and only provides water, nutrients and oxygen through the nutrient solution, ...

AI Technical Summary

Problems solved by technology

When planting, people often pay attention to the use of nitrogen, phosphorus and potassium fertilizers, but most of them do not pay attention to the use of calcium fertilizers. With the emergence of a large number of protected cultivation, it is more likely to cause calcium deficiency in greenhouse soil. The nutritional problem of calcium deficiency in vegetables has become a cultivation problem. One of the prominent problems in vegetables is calcium deficiency in vegetables. Generally, young leaves, young tissues, and fruits are prone to calcium deficiency. The symptoms are manifested as growth stagnation, atrophy and death of new parts of the plant such as terminal buds and root hairs; Unfolding, the newly expanded leaves are often burnt-edged