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Soil conditioner, preparation method and application for controlling clubroot of cruciferous crops

A technology for cruciferous crops and soil conditioners, applied in soil conditioning materials, applications, chemical instruments and methods, etc., can solve problems such as the inability to fundamentally solve the problem of soil pathogens, the difficulty of accurate evaluation of effects, and the large dosage of chemicals. It is not easy to soil compaction and environmental pollution, it is beneficial to environmental protection and food safety, and the prevention and control effect is outstanding and stable.

Active Publication Date: 2017-02-22
INST OF PLANT PROTECTION SICHUAN ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application effect of chemical agents is related to the application time, concentration, frequency, etc. Sprinkling or root irrigation usually need to be carried out 2-3 times, the dosage of chemicals is large, the labor cost is high, and the effect is often difficult to accurately evaluate, and a large amount of soil agent treatment will make The agent directly penetrates into the soil or groundwater, which not only causes environmental pollution, but also brings harm to human health.
[0006] Whether it is physical control or chemical control, it is time-consuming and labor-intensive
[0007] In addition, in the prior art, there is also the method of using seed coating agent to prevent clubroot, but the seed coating agent is effective in the season and cannot fundamentally solve the problem of pathogenic bacteria surviving in the soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0034] Take by weight 70 parts of calcium nitrate and / or calcium oxide and 20 parts of poly(acrylic acid-CO-acrylamide) and kaolin composite superabsorbent resin slow-release agent, after fully mixing, press solid-liquid weight ratio Add water at a ratio of 1:1, stir evenly, and dry the obtained material to 70% of the original moisture; by weight, add 0.7 parts of magnesium sulfate, 15 parts of humus, 9 parts of sodium alginate binder, and 4 parts of nitrogen fertilizer. After mixing, add water according to the solid-liquid weight ratio of 1:0.3, stir evenly, press the obtained material into granules through a granulator, the particle size is 3mm, dry and sieve, and pack separately.

preparation Embodiment 2

[0036] Take by weight 80 parts of calcium nitrate and / or calcium oxide and 20 parts of poly(acrylic acid-CO-acrylamide) and kaolin composite superabsorbent resin slow-release agent, after fully mixing, press solid-liquid weight ratio Add water in a ratio of 1:0.8, stir evenly, and dry the obtained material to 65% of the original moisture; by weight, add 0.8 parts of magnesium sulfate, 12 parts of humus, 10 parts of sodium alginate binder, and 5 parts of nitrogen fertilizer, fully After mixing, add water according to the solid-liquid weight ratio of 1:0.3, stir evenly, press the obtained material into granules through a granulator, the particle size is 4mm, dry and sieve, and pack separately.

preparation Embodiment 3

[0038] Take by weight 75 parts of calcium nitrate and / or calcium oxide and 25 parts of poly(acrylic acid-CO-acrylamide) and kaolin composite superabsorbent resin slow-release agent, after fully mixing, press solid-liquid weight ratio Add water at a ratio of 1:1, stir evenly, and dry the obtained material to 60% of the original moisture; by weight, add 1 part of magnesium sulfate, 10 parts of humus, 9 parts of sodium alginate binder, and 4 parts of nitrogen fertilizer. After mixing, add water according to the solid-liquid weight ratio of 1:0.4, stir evenly, press the obtained material into granules through a granulator, the particle size is 5mm, dry and sieve, and pack separately.

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Abstract

The invention provides a soil conditioner for preventing and treating clubroot diseases of cruciferae crops and application of the soil conditioner. The soil conditioner comprises, by weight, 70-80 parts of water-soluble calcium, 0.1-1 part of water-soluble magnesium, 4-5 parts of organic nitrogen, 8-15 parts of humus, 6-15 parts of pellet binders and 20-25 parts of sustained-release preparations. The invention further provides a preparation method of the soil conditioner. The soil conditioner can have a good effect on preventing and treating the clubroot diseases of the cruciferae crops and solve the problem of the clubroot diseases of the cruciferae crops fundamentally; the soil conditioner is free of environmental pollution, beneficial to environmental protection and food safety, safe and convenient to use, particularly suitable for the rice planting season of a paddy-upland rotation region, capable of achieving the double functions of slowly and evenly up-regulating soil acidity and alkalinity and providing nitrogenous fertilizer required by rice in the green-turning period, and good in application and popularization prospect.

Description

technical field [0001] The invention belongs to the field of soil conditioner preparation, and in particular relates to a soil conditioner for preventing and treating clubroot of cruciferous crops, a preparation method and application thereof. Background technique [0002] Cruciferous crops are important oilseeds and economic crops. Due to the damage of clubroot, many diseased areas can no longer grow cruciferous vegetables and rapeseed crops, which seriously affects the production, life and economic benefits of farmers. The causative bacterium of clubroot in cruciferous crops is Plasmodium brassicae, the flagellate fungus, and the dormant spores of clubroot can survive in the soil for more than 15 years. The pathogen is mainly transmitted through the soil with bacteria and the irrigation water contaminated by the pathogen. Long-distance transmission is carried out for the transmission of infected seeds, infected vegetable seedlings, etc. Soil pH above 7.0 is not conducive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40C09K101/00C09K109/00
Inventor 刘勇张蕾黄小琴刘红雨周西全伍文宪尹全宋君
Owner INST OF PLANT PROTECTION SICHUAN ACAD OF AGRI SCI
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