Biochar-based special long-acting composite fertilizer for corn and preparation method thereof

• Main Authors: ZHANG GUANGNA, WU ZHIJIE, WANG JUNYU, ZHANG YULAN, CHEN LIJUN
• Format: Patent
• Language: Chinese; English
• Published: 04.07.2017
• 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 specifically relates to a biochar-based special long-acting composite fertilizer for corn and a preparation method thereof, belonging to the technical field of biochar fertilizers. The composite fertilizer is capable of reducing the loss of nitrogen and phosphate fertilizer, improving the utilization rate of elemental nitrogen and elemental phosphorus, prolonging the duration of the efficiency of nitrogen fertilizer, meeting demands of corn for the nitrogen fertilizer in the whole growing period, resisting drought, conserving moisture, increasing the pH value of soil and improving acidic soil. The composite fertilizer is characterized in that the composite fertilizer (a dry base) comprises corn stalk biochar, a chemical fertilizer, Chinese medical stone and a binder in a certain weight ratio; the ratio of elements of the composite fertilizer meets growth demands of corn; and the composite fertilizer is prolonged in fertilizer efficiency and can condition plant growth and improve crop output and