Abstract: A method of producing an agricultural product for improving immunity, the agriculture product being rice, includes: (1) soaking seeds of the agricultural product in a solution containing a magnetic material and a ?-glucan; (2) before planting the seeds, applying a bottom fertilizer to a paddy field for the agricultural product, the bottom fertilizer including an organic fertilizer, the magnetic material, an oyster shell powder, the ?-glucan and an organic zinc; and (3) at tillering stage, applying a topdressing to the paddy filed, the topdressing including the ?-glucan and the organic zinc.

Abstract: A regulator for increasing plant ?-glucan content includes the following components by weight: 30-50 parts of a magnetic material, 20-30 parts of an oyster shell powder, 20-30 parts of an illite powder, and 10-20 parts of a mushroom polysaccharide extract.

Abstract: The invention discloses a synergist for improving crop resistance and fertilizer absorption capacity. The synergist includes the following components by weight: 20-30 parts of an oyster shell powder, 20-30 parts of a water chestnut skin powder, 10-20 parts of a chinaberry bark powder, 10-20 parts of a magnetic material, 10-20 parts of an illite powder, 5-10 parts of a shiitake mushroom polysaccharide extract. The synergist can, on one hand, improve the resistance of crops, especially reducing the pests and diseases significantly, improving waterlogging and drought resistance; and, on the other hand, greatly reduce the use of fertilizers, especially nitrogen fertilizers, preventing soil compaction. It can also significantly increase the content of active polysaccharides, especially ?-glucan in crops. In addition, the raw materials are readily available, the cost is low, and there are significant economic benefits.

Abstract: The invention relates to a compound capable of blocking the absorption of heavy metals by plants and a composition containing the same. The compound was extracted from Aegiceras corniculatum. The compound is extracted by enzyme extraction, filtration, concentrating and drying. The compound is derived from natural plants, and no organic solvents are used in the extraction process. The compound and the composition formed by the compound have a certain barrier effect on the absorption of heavy metals by plants.