Allelopathy is used to control weeds and develop environmentally safe herbicides. For example, the application of compost made of sorghum or Suaeda salsa in apple orchards can reduce the biomass of weeds by 85% ~ 90% without adverse effects on fruit trees; Oat dried Artemisia stalk applied to farmland can effectively reduce weed biomass by 80% ~ 90%.
Use allelopathy to control pests and diseases, and develop environmentally safe fungicides. Allelopathic substances have allelopathic inhibitory effects not only on higher plants, but also on microorganisms such as fungi and bacteria.
At present, the research on allelopathy of vegetable crops is less than that of field crops, mainly focusing on tomatoes and cucumbers, and there are even fewer reports on other vegetable crops. Therefore, the application of allelopathy in vegetables still has great research space.
Advantages and disadvantages:
1, Advantages: Reduce the use of chemical pesticides: Allelopathy can reduce the use of chemical pesticides on vegetable crops, thus reducing pesticide residues and environmental pollution. Promote the growth of vegetables: Some allelochemicals can promote the growth of vegetable crops and improve the yield and quality. Inhibition of pests and diseases: Allelopathic substances can inhibit the occurrence and spread of pests and diseases, thus reducing the loss of vegetable crops.
2. Disadvantages: the mechanism of action is unclear: at present, the mechanism of allelopathy is not completely clear, and there may be some unknown risks. It may have negative effects on some vegetable crops: some allelochemicals may have negative effects on some vegetable crops, such as inhibiting growth and reducing yield.