Nutrition modifier rich in selenium for lowering content of heavy metals in food crops and application thereof
A nutritional regulator and food crop technology, applied in the fields of agriculture and fertilizers, can solve the problems of high cost and unbearable for farmers, and achieve the effects of reducing Cd pollution, increasing selenium content, and reducing heavy metal pollution
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[0013] Example 1: The experiment of reducing the pollution of heavy metal Cd in the rice variety Zhefu by the selenium-enriched nutritional regulator that can reduce heavy metals in crops
[0014] 1. Test materials
[0015] The rice variety of the experimental site in Huangxing Town, Changsha is Zhefu, which was transplanted on April 14 and harvested on June 16. The soil type and chemical properties of Huangxing Town are pH4.90, organic matter 33.7g / kg, total nitrogen 2.06g / kg, alkaline nitrogen 223.0mg / kg, available phosphorus 4.2mg / kg, available potassium 82.0mg / kg, total cadmium 9.02mg / kg, total lead 41.1mg / kg, total arsenic 13.3mg / kg, total chromium 81.8mg / kg, total mercury 0.06mg / kg.
[0016] 2. Specific experimental design
[0017] Adopt field plot experiment, treat 6 plots in parallel, each plot area is 6m×6m=36m 2 , the base fertilizer is compound fertilizer (NPK15-15-15) 60kg / mu, and the top dressing is urea (12kg / mu). Field management measures are in accordance ...
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