Soil conditioner for preventing and treating clubroot of oilseed rape as well as preparation method and application of soil conditioner

Abstract

The invention relates to the field of preparation of soil conditioners, in particular relates to a soil conditioner for preventing and treating clubroot of oilseed rape as well as a preparation methodand application of the soil conditioner. The soil conditioner for preventing and treating clubroot of the oilseed rape, which is provided by the invention, comprises the following raw materials in parts by weight: 70 to 80 parts of water-soluble calcium, 0.1 to 1 part of water-soluble magnesium, 2 to 3 parts of organic nitrogen, 8 to 15 parts of humus, 6 to 15 parts of an adhesive and 20 to 25 parts of a sustained-release agent. The soil conditioner for preventing and treating clubroot of the oilseed rape does not contain chemical pesticide, is non-toxic and harmless for crops, avoids environmental pollution, is favorable for environmental protection and food safety, can be used without being influenced by the geological condition and the soil environment, has a prominent and stable prevention and treatment effect on the clubroot, is not liable to cause soil hardening and environmental pollution, reduces the pathogen quantity of the soil fundamentally, prevents diseases from the source, prevents and treats the clubroot, and has the effects of improving the soil fertility and promoting the growth of crops; and the water-soluble calcium in the conditioner is releases slowly, so non-uniform distribution of Ca<2+> in the soil is avoided.

Description

technical field [0001] The invention relates to the field of soil conditioner preparation, in particular to a soil conditioner for preventing and controlling rape clubroot, 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, and the dormant spores of the pathogen 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 spreads through infected seeds, infected vegetable seedlings, etc. Soil pH above 7.0 is not conducive to the infection of pathogens and the occurrence and prevalence of...

AI Technical Summary

Problems solved by technology

[0009] Chinese patent CN104004526A discloses a soil conditioner, preparation method and application for preventing and controlling rape clubroot. It has the advantages of simple application and slow release in water, and has the effect of slowly and evenly increasing soil pH, but the release effect of organic nitrogen is not ideal. Especially in paddy and dry rotation (rice-rape or rice-vegetable) areas, when the growth of rice in the previous crop requires nitrogen, the release of nitrogen is insufficient, and the nitrogen released later becomes useless nitrogen, resulting in a reduction in the yield of rice in the previous crop and nitrogen fertilization. waste of