Intercropping crops is a time and space use technology that can fully use conditions such as seasons, land, and climate to improve the multiple cropping index and complete crop ripening and high-yield crops. In terms of agricultural consumption, according to the principles of combining crops with each other, poor collocation and rational planting can effectively reduce the incidence of one or both diseases and insect pests, not only greatly reducing the use of chemical pesticides, reducing the cost of agricultural products, and promoting the production of agricultural products. Improving quality and incomes also protect the natural ecological environment in which we live. Now farmers' friends are introduced to the crops with a reasonable mix of several intercropping methods in the suppression and control of the onset of the role of pests and diseases, for consumption in the practice reference.
1. Cotton seedlings in cotton fields can trap eggs and reduce damage to cotton seedlings. In the cotton field every 10 meters *** broadcast line l corn (50 to 60 piers per acre, each pier 2 to 3), can effectively improve the ecological structure of cotton fields, lure cotton bollworm, corn borer spawning, thereby reducing cotton The amount of eggs laid on the seedlings. According to surveys in seven counties in Shandong Province from 1980 to 1983, the amount of eggs laid on cotton seedlings was evenly reduced by 60% to 70%.
2. Intercropping garlic with cotton or rape can repel beneficial insects and reduce eggs. The bactericidal bactericidal substance that garlic volatilizes - allicin has pungent odor, can make the aphid that damages cotton or rape "retreat away from home", and the attack of second generation of cotton bollworm of cotton is distinctly reduced, other beneficial insects can also "fight". According to the survey, no crops were used to control seedlings and cotton seedlings were not used for leaf rolling. The same conditions of monocropping were used to control seedling mites 2 times, and the highest leaf rolling rate was still 25% to 28%. The second generation of cotton bollworms was between There are only 12 eggs in the strain, and the number of eggs in the monoculture field is more than 500.
3. Potato and garlic intercropping can inhibit the onset of potato late blight.
4. Cabbage between garlic can be clearly divided to reduce soft rot of cabbage. Planting Chinese cabbage between garlic lines reduced cabbage soft rot disease by 62.5%.
5. Soybean or peanut intercropping can kill beneficial insects and reduce insect population. In the soybean or peanut field, the type of castor was evenly distributed on the ground, and the poisoned turtles who died after taking the ramie leaves to the fields and peanuts to lay eggs could die. The effect was no less than the application of chemical pesticides. According to the experiment, 350 to 400 ramie are planted uniformly in the peanut field per acre. Each ramie can kill 4 to 5 gold tortoises evenly, reducing the worm population by about 90%, and reducing the peanut worm fruit rate to below 5%. Increase production by more than 10%.
6. Intercropping corn or peanuts can effectively reduce corn damage. Pumpkin nectar can induce the parasitic natural enemies of corn borer, the black egg bee. After the parasitic effect of black egg bees, it can effectively reduce the damage of corn borer. In addition, corn intercropping can also significantly reduce the damage of corn borer.
7. Intercropping maize and spicy pepper can reduce the incidence of spicy pepper. Due to the shading effect of corn, the incidence of sunburn and virus disease in pepper was 72% lower than that of monocropping field. The interplanting of corn and green pepper reduced the incidence of green pepper virus disease by 56.9%.
8. Inter-corn cucumber can reduce the incidence of cucumber virus disease. Cucumber cultivation in the corn row can reduce cucumber mosaic disease by 61.6%.
9. Intercropping Chinese cabbage can reduce cabbage's various diseases. In intercropped corn fields, the temperature of the field is 0.5°C lower than that of the monocropping field, and the ground temperature is lowered by 2°C. This can reduce cabbage virus disease by more than 20% and white spot disease by 18%. The incidence of soft rot and downy mildew of cabbage is also significantly reduced. .
10. The hybrid corn and pea can achieve a double harvest. Both corn and peas benefit from each other and both increase production.
11. The mixed use of flax and spring wheat can clearly reduce the onset of bollworm. Flax and spring wheat mixed field, due to the protective effect of Maimang, can make a clear reduction in the amount of bollworm attack. According to the investigation of the Changji County Agricultural Institute in Xinjiang, the mixed bollworm had only a small number of episodes on the ground, while the single-crop field had 4 to 10 bollworms per square meter, and the rate of flower bud damage was as high as 35%.
12. The interplanting between onion and carrot can drive beneficial insects. The scent that the green onions and carrots each feel can drive off each other's beneficial insects.
13. Cruciferous lettuce, tomato, or peppermint can be used to repel vegetables. The irritating odor from lettuce, tomato, or mint can keep cabbage white butterflies from cabbages, cabbages, and other cruciferous vegetables from spawning.
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