Planting method for selenium-rich upland rice

Abstract

The invention relates to a planting method for selenium-rich upland rice. The selenium content in the rice obtained through the planting method is 0.20 mg / kg-0.25 mg / kg, the organic selenium content reaches to be 85%-90%, and the use amount of a selenium-rich foliar fertilizer is reduced by 100%-300%. The selenium-rich foliar fertilizer is sprayed on rice leaves at the early period of upland ricepanicle emergence and flowering, 90% or more of the sprayed selenium-containing inorganic compound can be transformed into the organic selenium in the rice, so that the selenium content of the rice can be effectively improved. A manganese element foliar fertilizer is sprayed on upland rice leaves once at 10-15 days before the early period of upland rice panicle emergence and flowering, the selenium element in rice stems and leaves can be promoted to transfer to rice panicle. Soil-hilling is performed after spraying selenium-rich foliar fertilizer once, lodging can be prevented, the grouting rate of the upland rice can be increased, so that the upland rice can mature for 5-10 days ahead of schedule, and yield can be increased by 10-15%.

Description

technical field [0001] The invention relates to the technical field of agricultural planting, in particular to a method for planting selenium-enriched upland rice. Background technique [0002] Selenium can improve human immunity, promote the proliferation of lymphocytes and the synthesis of antibodies and immunoglobulins. Selenium has obvious inhibitory and protective effects on colon cancer, skin cancer, liver cancer, breast cancer and other cancers, and its intermediate metabolite methyl enol in the body has strong anticancer activity. Selenium, vitamin E, allicin, linoleic acid, germanium, zinc and other nutrients have synergistic antioxidant effects and increase antioxidant activity. At the same time, selenium has the effect of reducing and alleviating the toxicity of heavy metals. Research in the scientific community has found that the level of blood selenium is closely related to the occurrence of cancer. A large number of survey data show that the level of seleniu...

AI Technical Summary

Problems solved by technology

[0003] In the process of rice planting, selenium-enriched rice is usually obtained by spraying selenium-containing foliar organic fertilizers, and the selenium-enriched rice planted by this method, the selenium content of each organ of the rice plant at the mature stage decreases in order from the stem, leaf, and fruit. The method for planting selenium-enriched rice obviously does not effectively and rationally utilize the selenium element in the stem and leaf of the selenium-enriched rice plant, the usage of selenium fertilizer is relatively large, and the production cost is high