Method for increasing yield of selenium-enriched rice by increasing tillering

Abstract

The invention discloses a method for increasing the yield of selenium-enriched rice by increasing tillering, and belongs to the technical field of nano agriculture. The method comprises the following steps: applying a spherical Se NMs solution to leaf surfaces in a rice seedling stage; wherein the size of the spherical Se NMs ranges from 10 nm to 90 nm, the hydration radius ranges from 160 nm to 200 nm, the surface charge ranges from-15 mV to-18 mV, and the purity is 95% or above; the rice seedling stage refers to the three-leaf and one-core stage of rice; the spherical Se NMs solution is a spherical Se NMs aqueous solution, and the concentration of the spherical Se NMs aqueous solution is 1-3 mg/L. By means of the method, the rhizosphere microflora of the rice can be remarkably improved, root exudates can be increased, the soil environment is changed, and absorption of root nutrients is promoted; the Se content in the rice is obviously improved; the synthesis of gibberellin in rice can be regulated and controlled, and the upper expression of tillering genes is increased; the tiller number of rice plants is obviously increased; the yield is increased.

Description

technical field [0001] The invention relates to a method for increasing the yield of selenium-enriched rice by increasing tillers, and belongs to the technical field of nano-agriculture. Background technique [0002] Selenium (Se) is a constituent element of glutathione peroxidase in the human body and an important component to maintain the activities of various enzymes. It has the functions of anti-oxidation, anti-cancer and improving immunity in the human body. Food-based Se supplementation is one of the main measures to meet the human body's Se supply. [0003] Se-rich rice is currently one of the main ways of human Se intake, and its economic value is 1 to 5 times higher than that of ordinary rice. At present, the main way to produce Se-rich rice is to apply Se fertilizers in the soil, mainly sodium selenate and sodium selenite, etc. However, the utilization efficiency of these traditional Se fertilizers is less than 20%, and a large amount of Se fertilizers remain, ca...

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Problems solved by technology

However, the utilization efficiency of these traditional Se fertilizers is less than 20%, and a large amount of Se fertilizers remain, causing serious soil environmental problems

However, there is no literature mentioning under what conditions Se NMs can stably and efficiently promote rice growth and increase Se content; nor does it mention how the application amount of Se NMs affects the accumulation of Se in crops; Whether Se NMs can achieve the goal of increasing selenium by regulating rice hormone levels, gene expression and rhizosphere environment, increasing nutrient utilization effectiveness, promoting rice tillering and growth

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