Method for planting selenium-enriched rice at high yield

Abstract

The invention provides a method for planting selenium-enriched rice at a high yield. The method comprises the following steps: 1), preprocessing seeds; 2) plowing the soil and fertilizing; 3) culturing seedlings; 4) transplanting the seedlings; 5) additionally fertilizing; 6) harvesting. According to the method provided by the invention, a seed processing step is additionally adopted to sterilize and disinfect the seeds, and meanwhile, the seeds are soaked with sodium selenite to increase the selenium content in rice seeds. A long-acting selenium-enriched coated controlled release compound fertilizer applied for rice planting comprises a core fertilizer and a coated layer coating the surface of the core fertilizer. The core fertilizer adopts sulphur coated urea to form a three-layer structure, such that the controlled release efficiency is remarkable, and the fertilizer efficiency is long. Only a little amount of fertilizer needs to be applied additionally after planting to save time and labor. Both the core fertilizer and the coated layer are prepared from organic degradable materials, such that the fertilizer efficiency can be kept in the degradation process. The core fertilizer is rich in microelements, thus promotes the nutrimental value of rice, and the soil quality can also be improved on the premise of degradability. The ingredients of the fertilizer are friendly to soil, low in production cost, beneficial for market promotion and good in economic benefits.

Description

technical field [0001] The invention relates to a high-yield planting method of selenium-enriched rice. Background technique [0002] Rice (scientific name: Oryza sativa) is a kind of herbaceous Oryza genus, and it is also the most important and longest one as food in Oryza genus. It is also called Asian cultivated rice, and it can also be said to be rice in simple terms. It is an annual, gramineous plant, monocotyledonous, sexually warm and humid, about 1 meter high when mature, with slender leaves, about 50 to 100 cm long and 2 to 2.5 cm wide. The flowers of rice are very small. When blooming, the main flowering branches will be arched, and small flowers will bloom between 30 and 50 cm below the branches. Most of them are self-pollinating and set seeds, which are called rice spikes. Generally, the size of the rice ear is 5 to 12 mm long and 2 to 3 mm thick. [0003] About half of the world's people eat rice as a staple food, especially in Asia, where rice is the main sou...

AI Technical Summary

Problems solved by technology

However, the planting method provided by this patent still needs to apply base fertilizer, topdressing urea, potassium chloride and superphosphate at the tillering stage, apply compound fertilizer at the heading stage, and topdressing urea, potassium chloride and superphosphate at the filling stage , the frequency of fertilization and the types of fertilization are relatively complicated, time-consuming and labor-intensive

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