Segmented-absorption fully-degradable coated tobacco rod fertilizer and preparation method thereof

• Main Authors: LI HONGXUN, ZOU YAN, GAO WEICHANG, LIN YECHUN, LIANG GUILIN, YANG LEI, LUO ZHU
• Format: Patent
• Language: Chinese; English
• Published: 02.11.2021
• Subjects: CHEMISTRY; FERTILISERS; FERTILISERS CHARACTERISED BY THEIR FORM; MANUFACTURE THEREOF; METALLURGY; MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS

The invention discloses a segmented-absorption fully-degradable coated tobacco rod fertilizer. The rod fertilizer is sequentially divided into an early-stage fertilizer, a middle-stage fertilizer and a later-stage fertilizer from outside to inside, a first full-degradable material coating is arranged outside the early-stage fertilizer, a second full-degradable material coating is arranged between the early-stage fertilizer and the middle-stage fertilizer, and a third full-degradable material coating is arranged between the middle-stage fertilizer and the later-stage fertilizer; the disintegration time of the first full-degradable material coating is 1-2 days after planting, the disintegration time of the second degradable coating material is 25-30 days after planting, and the disintegration time of the third degradable coating material is 55-60 days after planting. All the degradable material coatings are completely degraded into CO2 and H2O after being disintegrated for 1-2 months. According to the method, b