Long acting composite iron fertilizer and preparation method and use thereof

Abstract

The invention provides a slow-release compound iron fertilizer for treating yellows of camphor trees. The slow-release compound iron fertilizer comprises the following compositions: 25 to 45 percent of peat, 40 to 45 percent of organic fertilizer, 10 to 15 percent of low-phosphorus envelope slow release fertilizer and 5 to 15 percent of ferrous sulfate fertilizer. The slow-release compound iron fertilizer is obtained by mixing the organic fertilizer, the peat and the low-phosphorus envelope slow release fertilizer according to proportion, dissolving the ferrous sulfate fertilizer into a nontoxic waste acid solution with a pH value of approximately 3.4, and uniformly mixing two mixtures. The iron fertilizer has the advantages of high content of organic substances, low phosphorus content, low pH value, high fertilizer utilization rate, durable fertilizer effect, stable physicochemical properties and convenient application, and not only has the functions of improving the growth conditions of the camphor trees, promoting nutrient balance and strengthening the tree vigor but also has obvious effect of preventing and controlling physiological diseases caused by iron deficiency of the camphor trees. The iron fertilizer can be applied to treatment of calcareous soil iron-deficiency yellow camphor trees.

Description

technical field

[0001] The invention belongs to the preparation of chemical fertilizers, and relates to a long-acting composite iron fertilizer for controlling yellowing of camphor trees in calcareous soils, and a preparation method and application thereof. Background technique

[0002] Camphor tree (Cinnamomum camphora (L) Presl), also known as camphor, is an evergreen tree with well-developed root system, straight trunk, tall and long-lived, and is listed as a national second-class protected tree species. Camphor tree has amazing noise-blocking ability due to its many branches and canopy stacking, and can resist high air pollution. It has the effect of fragrant environment and repelling mosquitoes, so it is also an excellent tree species for garden greening. Camphor trees are typical acid-loving plants. They are sensitive to iron deficiency and have high requirements on the growth environment. For example, there are a lot of construction waste and a large amount of domest...