Special fertilizer for preventing and controlling sugarcane manganese toxicity and application method thereof

Abstract

The invention discloses a special fertilizer for preventing and controlling sugarcane manganese toxicity. The special fertilizer is mainly prepared from an iron fertilizer, a nitrogen fertilizer, boric acid, citric acid and a sulfur fertilizer. By spraying the special fertilizer for preventing and controlling sugarcane manganese toxicity disclosed by the invention, active iron lacking in sugarcane seedlings under stress of manganese toxicity is replenished in a timely manner, and nitrogen, magnesium, boron and sulfur nutrients of the seedlings are regulated, so as to promote chlorophyll synthesis to enable leaves to be green quickly. Through a synergist for inhibiting manganese transport while promoting the absorption and transport of other nutrients in the special fertilizer, the special fertilizer can give full play to nutritional effects thereof, so that the special fertilizer can quickly control the manganese toxicity in ratoon sugarcane, promote growth of seedlings, and increase the yield of cane stalks significantly. After the special fertilizer is applied for 1-3 weeks, the content of manganese in young leaves is decreased by 3.7%-50.9%; after the special fertilizer is applied for 7 days, the content of chlorophyll in young leaves of ratoon sugarcane is increased by more than 3 times, and the proportion of green leaves is increased by more than 5 times; after application, the stalk length during a sugarcane mature period is increased by 4.8% or above, the stalk diameter is increased by 3.9% or above, and the yield is increased by 18.8%-60.1%. The special fertilizer in solid state is convenient for transportation and storage, and easy in application method.

Description

technical field [0001] The invention relates to the fields of sugarcane planting and fertilizers, in particular to a special fertilizer for preventing and controlling sugarcane manganese poisoning and an application method thereof. Background technique [0002] Manganese is an essential nutrient element for the growth and development of higher plants and a basic constituent element of soil. Manganese in soil exists mainly in mineral form. However, under acidic conditions or strongly reducing environments, manganese in soil dissolves as manganese ions into the soil solution. Excessive manganese ions in the soil are the main limiting factors affecting crop growth in acidic and poorly drained soils. The main symptom of manganese toxicity is the formation of manganese spots of different sizes on the leaf surface of old leaves. However, the main symptoms of Mn toxicity in sugarcane are different from those of most plants, and the symptoms of sugarcane toxicity in acidic soil a...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a special fertilizer for preventing and treating manganese poisoning in sugarcane, so as to overcome the problem of manganese poisoning in perennial root cane in acidic soil, promote the growth of sugarcane to be hindered, and improve the yield and quality of sugarcane

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