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Full-degradable mulching film for mountain rice planting and preparation method thereof

A fully degradable, rice-growing technology, applied in the fields of botanical equipment and methods, chemical instruments and methods, and chemicals for biological control, etc. Effect

Active Publication Date: 2021-08-06
HANGZHOU LVXING ENVIRONMENTAL PROTECTION MATERIALCO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of the mountain environment, mountain rice is mainly planted by seed sowing, and it germinates and grows after the rain. The underground pests in the mountainous area are not serious in the first year of cultivation, but after 2-3 years of cultivation on the same land, the pests and diseases will increase.

Method used

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  • Full-degradable mulching film for mountain rice planting and preparation method thereof
  • Full-degradable mulching film for mountain rice planting and preparation method thereof
  • Full-degradable mulching film for mountain rice planting and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1 solid film

[0059] Get 100kg bamboo vinegar liquid, fractionate and refine in the fractionating tower, get polyphenol section fractionation and refine product, get 45kg refined bamboo vinegar liquid, pH value 4.8, GC-MS (dissolved in dichloromethane) test wherein the content of phenolic compound in the organic matter The weight percentage is 54.6%.

[0060] Add 0.9kg sodium selenite, 0.225kg potassium dihydrogen phosphate, 1.125kg zinc sulfate and 1.125kg manganese sulfate in 45kg refined bamboo vinegar liquid, mix homogeneously, obtain the bamboo vinegar liquid containing additive.

[0061] The weight ratio of rice husk activated carbon to bamboo activated carbon is 8:2, the particle size is 2-4mm, the average pH is 8.9, and the average specific surface area is 1180m 2 / g, with a total weight of 45kg, mixed and filled in a columnar filter, and the bamboo vinegar liquid containing additives was naturally flowed through the filter, so that the active ingre...

Embodiment 2

[0069] Embodiment 2 liquid film

[0070] Activated carbon composite material and Torreya aril extract are the same as in Example 1.

[0071] 3.75kg of xanthan gum, 0.75kg of glycerin, 11.25kg of modified starch (phosphate ester starch with a degree of substitution of 0.08), 30kg of sodium carboxymethylcellulose, 1.5kg of chitin, 0.75kg of dodecylbenzenesulfonic acid and 60°C Heat 95kg of purified water and mix evenly to obtain a bio-adhesive aqueous suspension.

[0072] Grind the activated carbon composite material to a fineness of 600 mesh, add 1.5kg of Torreya aril extract and 5kg of hemp fiber (fiber length 2mm) into the bio-adhesive aqueous suspension, and mix evenly to obtain a fully degradable mulch film for mountain rice planting. The mulch film is a liquid film. When using it, mix the fully degradable mulch film for mountain rice planting with water at a weight ratio of 1:1. Spray it on the flat ground before planting the mountain rice. It cannot rain for 24 hours aft...

Embodiment 3

[0074] Embodiment 3 solid film

[0075] Get 200kg bamboo vinegar liquid, fractionate and refine in the fractionating tower, get polyphenol segment fractionation and refine product, get the refined bamboo vinegar liquid of 88kg, pH value 4.9, GC-MS (dissolved in methylene chloride) detects the presence of phenolic compounds in organic matter wherein The weight percentage is 55.3%.

[0076] Add 1.32kg sodium selenite, 0.528kg potassium dihydrogen phosphate, 3.52kg zinc sulfate and 1.76kg manganese sulfate in 88kg refined bamboo vinegar liquid, mix homogeneously, obtain the bamboo vinegar liquid containing additive.

[0077] Coconut shell activated carbon 10kg, particles 2-4mm, average pH 8.0, average specific surface area 1300m 2 / g, packed in a column filter, the bamboo vinegar solution containing additives naturally flowed through the filter, the active ingredients were fully absorbed by the activated carbon, and then dried at 30°C for 4 hours to obtain an activated carbon co...

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Abstract

The invention discloses a full-degradable mulching film for mountain rice planting and a preparation method thereof. The mulching film is composed of the following components in parts by weight: 45 to 120 parts of bamboo vinegar, 10 to 50 parts of activated carbon, 1 to 5 parts of torreya grandis aril extract, 10 to 50 parts of a biological adhesive and 5 to 45 parts of fibers. The mulching film has the effects of preventing weeds, killing bacteria, expelling parasites, improving lodging resistance of mountain rice and the like, can be completely degraded, and is particularly environment-friendly. The preparation method of the mulching film is simple to operate and easy for industrial production and popularization.

Description

technical field [0001] The invention relates to the field of plastic film technology, in particular to a fully degradable plastic film for upland rice planting and a preparation method thereof. Background technique [0002] Mountain rice, also known as upland rice, is a non-hybrid upland rice variety suitable for cultivation in mountainous areas. Compared with ordinary rice, due to its growth environment, mountain rice has the advantages of rich mineral elements, high B vitamin content, and no pesticide residues. However, due to the special growth environment of mountain rice, there are also some defects. , the high content of cadmium in the soil may lead to the enrichment of cadmium in mountain rice. [0003] In addition, according to the inventor's observations, common underground pests in mountainous areas, such as japonica ants, wireworms, grubs, weevils, etc., will harm the seeds and buds of mountain rice. Due to the limitation of the mountainous environment, mountain...

Claims

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Application Information

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IPC IPC(8): C09K17/52A01G13/02A01N65/06A01N61/00A01P17/00C05G3/80C09K101/00C09K109/00
CPCC09K17/52A01G13/0275A01G13/0262A01N65/00A01N65/06A01N61/00C05G3/80C09K2101/00C09K2109/00Y02A40/28
Inventor 王衍彬许炯秦玉川王丽玲方茹贺亮程俊文童晓青刘本同钱华
Owner HANGZHOU LVXING ENVIRONMENTAL PROTECTION MATERIALCO
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