Disclosed is a method for maize cultivation in the black soil area of northeast China, including the following steps that can be conducted in any order: A. conservation tillage with straw returning: after a crop is harvested in autumn, raking and concentrating straws in rows; B. when sowing, disposing a front-loaded returning device on a sowing machine for a second concentration; C. when sowing, increasing the number of plants through a wide- and narrow-row effect; D. additional application of an organic bacterial fertilizer: where, the organic bacterial fertilizer includes a base fertilizer and a seed fertilizer; the base fertilizer refers to 500 kg of a 40% organic-inorganic mixed slow-release fertilizer; the seed fertilizer refers to 80 kg of an organic bacterial fertilizer; E. weeding with a herbicide treated by a secondary dilution method; and F. subsoiling to break a plow pan in summer: subsoiling flat land parcels to 40 cm.

Disclosed is a method for maize cultivation in the black soil area of northeast China, including the following steps that can be conducted in any order: A. conservation tillage with straw returning: after a crop is harvested in autumn, raking and concentrating straws in rows; B. when sowing, disposing a front-loaded returning device on a sowing machine for a second concentration; C. when sowing, increasing the number of plants through a wide- and narrow-row effect; D. additional application of an organic bacterial fertilizer: where, the organic bacterial fertilizer includes a base fertilizer and a seed fertilizer; the base fertilizer refers to 500 kg of a 40% organic-inorganic mixed slow-release fertilizer; the seed fertilizer refers to 80 kg of an organic bacterial fertilizer; E. weeding with a herbicide treated by a secondary dilution method; and F. subsoiling to break a plow pan in summer: subsoiling flat land parcels to 40 cm.

A granular cohered MOP fertilizer having one or more micronutrients, and one or more binding ingredients. The fertilizer is prepared by compacting MOP feed material with a source of zinc and one or more optional binders to form a cohered MOP composition. The cohered MOP composition is then further processed, such as by crushing and sizing, to form a cohered granular MOP product containing a source of zinc. The process yields a fertilizer product containing micronutrients with superior elemental and granule size distribution without compromising handling or storage qualities.

A granular cohered MOP fertilizer having one or more micronutrients, and one or more binding ingredients. The fertilizer is prepared by compacting MOP feed material with a source of zinc and one or more optional binders to form a cohered MOP composition. The cohered MOP composition is then further processed, such as by crushing and sizing, to form a cohered granular MOP product containing a source of zinc. The process yields a fertilizer product containing micronutrients with superior elemental and granule size distribution without compromising handling or storage qualities.

A biological-laden dry fertilizer includes a dry fertilizer granule and a coating inoculated with a biological agent and applied to the dry fertilizer granule. The biological coating is a solution or suspension comprising water or oil and at least one biological agent, or an emulsion of an oil and a solution or suspension comprising water and at least one biological agent. The at least one biological agent is a biological chemical, plant extract, microbial agent, and/or a living organism.

A method for separating a particulate stream of an evaporite mineral feedstock, the method comprising passing the stream to an air classifier configured to separate the particulate stream into a fine component and a coarse component.

A method for separating a particulate stream of an evaporite mineral feedstock, the method comprising passing the stream to an air classifier configured to separate the particulate stream into a fine component and a coarse component.

A method for separating a particulate stream of an evaporite mineral feedstock, the method comprising passing the stream to an air classifier configured to separate the particulate stream into a fine component and a coarse component.

Disclosed herein is a composition comprising fertilizer particles being coated with at least two layers of superabsorbent polymers such that leachate of nitrogen in the soil is substantially decreased.

Disclosed herein is a composition comprising fertilizer particles being coated with at least two layers of superabsorbent polymers such that leachate of nitrogen in the soil is substantially decreased.