Modifying agent capable of passivating vegetable garden soil heavy metal and preparation method and applying method thereof
A technology of improver and heavy metal, which is applied in the field of soil improvement and restoration, which can solve the problems of content increase and achieve the effects of reducing absorption, improving soil properties and reducing toxicity
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Embodiment 1
[0024] Example 1 A kind of amendment capable of passivating heavy metals in vegetable soil provided by the present invention and its preparation method
[0025]1. A kind of improving agent (i.e. the improving agent of the present invention described in embodiment 3 treatment 2) provided by the present invention can passivate heavy metals in vegetable field soil, it is made up of organic material and potassium polyacrylate, described The organic material and potassium polyacrylate are packaged separately, that is, they are not mixed together; the mass ratio of the amount of the organic material to the potassium polyacrylate is 9:1; the organic material is composed of the following components :
[0026] 100 kg of rice crop straw, 10 kg of livestock manure, 10 kg of potassium sulfate, 20 kg of lignite, 1.8×10 7 The number of effective viable bacteria / g actinomycetes ( Actinomyces ) 0.02 kg, 0.4×10 7 Effective number of viable bacteria / g of photosynthetic bacteria ( Photosynt...
Embodiment 2
[0030] The improving agent of the present invention of embodiment 2 is the improving agent of the present invention described in embodiment 3 treatment 3, and the mass ratio of this improving agent and its preparation method except the consumption of described organic material and the consumption of potassium polyacrylate is 7: Except 3, all the other components and their contents, the preparation method are all the same as in Example 1.
Embodiment 3
[0031] Example 3 Application of the present invention's improvement agent to passivate heavy metals in vegetable soil
[0032] 1. Test situation
[0033] 1.1. The test site: the test greenhouse of Yunnan Academy of Agricultural Sciences, the test soil is paddy soil, the texture is
[0034] Clay soil, the basic physical and chemical properties of the tested soil are shown in Table 1. Cultivated crops for the test: baby cabbage (variety name: Princess Koryo).
[0035] Table 1. Basic physical and chemical properties of the soil in the test site
[0036]
[0037] 1.2. Experimental setup: potted plants were used in the experiment, and 5 different treatments were set up, each treatment was repeated 4 times, and 2 seeds were planted on demand in each pot. Sow on September 2, and thin the seedlings at the seedling stage of the right age. See (Table 2) for the experimental treatments. The application method of the improvement agent of the present invention described in the follo...
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