Controlled release nitrogen-containing controlled release fertilizer special for sugarcane

Abstract

The invention belongs to the technical field of plant cultivation and relates to a controlled release nitrogen-containing controlled release fertilizer special for sugarcane. The controlled release fertilizer is prepared through even mixing of reaction film-forming polymer coated urea with a 180-day release period, reaction film-forming polymer coated urea with a 120-day release period, reaction film-forming polymer coated urea with a 60-day release period, urea, a phosphate fertilizer, a potash fertilizer, zinc sulfate and magnesium sulfate. According to the controlled release fertilizer, single controlled release fertilizers with different release periods and part of quick-acting fertilizers are compounded according to nutrient absorption laws of the sugarcane, the fertilizer efficiency is long, nutrient release accords with absorption requirements of the sugarcane, the nutrient requirement of the sugarcane in the growing period is satisfied through fertilization once, the foundation is laid for high yield of the sugarcane, and a good effect is achieved through field experiments.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation, and relates to a controlled-release fertilizer, in particular to a controlled-release nitrogen-containing sugarcane special controlled-release fertilizer. Background technique [0002] Sugarcane is the main sugar crop in my country. The planting area of ​​sugarcane in my country ranks third in the world, accounting for more than 85% of the perennial sugar crop area in my country, and the sugar production accounts for more than 90% of the total sugar. The sugarcane industry has become the main production area An important pillar of economic development and the main source of farmers' income. Sugarcane is also a high-yield bioenergy crop with high biomass and high sugar content, which can be used not only for sugar refining, but also for direct production of alcohol. With the continuous development of science and technology, as an important energy crop, sugarcane has great development pot...

AI Technical Summary

Problems solved by technology

At the same time, sugarcane has a long growth period, and it takes about 10-12 months from germination to process maturity, and it is impossible to top-dress the plants after they are closed

At present, the main types of fertilizers in production are quick-acting compound fertilizers and urea, which dissolve quickly in the soil. After fertilization, the concentration of the soil solution will increase rapidly in a short period of time, but the aftereffect time is short, which cannot meet the nutrient needs of sugarcane in the later stage of growth. Moreover, if a large amount of fertilizer is applied near the root zone before planting, it will cause the nutrient concentration in the soil solution to be too high, and the phenomenon of "root burning" will occur. The effectiveness of sugarcane reduces the utilization rate of fertilizers. Therefore, in the growth cycle of sugarcane, topdressing is required 2 to 3 times. Multiple fertilization increases labor costs, consumes a lot of manpower and material resources, and farmers' benefits decline. At the same time, due to low fertilizer utilization rates, resulting in big waste

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