High-quality rice production method of enriching selenium and zinc, reducing cadmium and increasing yield, and selenium-rich zinc-rich high-quality nutrition rice

Abstract

The invention proposes a high-quality rice production method of enriching selenium and zinc, reducing cadmium and increasing yield. The method comprises: selecting high-quality rice varieties with rice quality up to a first grade of national standard; adopting artificial seedling transplanting and weeding method without applying pesticides and herbicides in the planting process, and performing cultivation in wide and narrow rows; a fertilization method being that applying base fertilizer when plowing a field, applying seedling raising fertilizer within half a month after transplanting, and nolonger applying chemical fertilizer in a later period; adopting a selenium-zinc combined application method to spray selenium and zinc fertilizer on leaf surfaces at a heading stage and early fillingstage of rice; harvesting when the rice maturity reaches about 95%; processing the rice after storing the rice for 1-2 months; and vacuum-packing the rice, and conducting storing in a cold storage. According to the present invention, specific concentration, dosage and amount ratio are adopted at key time points to carry out precise fertilization in the selenium-zinc combined application technologyof rice, the technology has good effects of enriching selenium and zinc, increasing yield and reducing cadmium on rice, and the nutrition quality, safety quality and production efficiency of the riceare greatly improved.

Description

technical field [0001] The invention relates to the technical field of rice planting, in particular to a production method of high-quality rice enriched in selenium, enriched in zinc, reduced in cadmium and increased in yield, and high-quality nutritious rice enriched in selenium and enriched in zinc. Background technique [0002] Rice is the main food crop in my country, and the population who takes rice as a staple food accounts for about 60% of the total population. Compared with other grains, rice contains the least crude fiber, and the starch grains are small and easy to digest. The nutritional value of rice is high, and the digestibility and absorption rate of various nutrients contained in it are high, which is suitable for human needs. [0003] The planting area of ​​rice in my country is as high as 29.96 million hectares, distributed in a vast area, from Sanya City in tropical Hainan Province in the south to Mohe City in Heilongjiang Province in the north, from Tai...

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Problems solved by technology

[0007] Regarding the effects of combined application of zinc and selenium on crops, it is shown that zinc and selenium can promote the absorption of each other on rapeseed [19-20] However, there are no re

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