"Prevention and Control of Pests and Diseases" farmland PPT courseware

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E-education edition fifth grade science volume 1	pptx	6 MB

"Prevention and Control of Pests and Diseases" farmland PPT courseware

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Upload Time: 2024-09-28

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"Prevention and Control of Pests and Diseases" farmland PPT courseware

What methods do people use to prevent pests and diseases?

1. Pesticides treat diseases

2. Spray pesticides to control pests

3. Deep cultivation of farmland

4. Drying seeds

5. Trapping and killing insects

6. Plant quarantine

7. Biological pest control

Which of these methods harness the power of nature to control pests and diseases?

What are the benefits and drawbacks of using pesticides to control pests and diseases?

Advantages: The use of chemical pesticides to control plant and crop plant diseases and insect pests is effective, has a wide range, is easy to use, and can achieve the purpose of prevention and control in a short period of time.

Disadvantages: While killing a large number of pests, some highly toxic and highly residual chemical pesticides, if used for a long time or improperly used, can cause critical damage to crops, cause poisoning to humans and animals, and can also cause pests to become resistant to pesticides.

Do you have any good suggestions for using pesticides?

It is advocated to use biological control methods and use chemical pesticide control methods at critical moments. If chemical pesticides are used, they should be highly efficient, low-toxicity, and low-residue pesticides. It is prohibited to use pesticides whose toxic components can accumulate in the bodies of humans and animals.

Keywords: farmland teaching courseware, pest control teaching courseware, E-education version fifth grade science PPT courseware download, fifth grade science slide courseware download, farmland PPT courseware download, pest control PPT courseware download, .PPT format;

For more information about the "Farmland Pest and Disease Control" PPT courseware, please click on the Farmland PPT PPT Control of Pest and Disease PPT tab.

"Prevention and Control of Pests and Diseases" Farmland PPT Courseware 2:

"Prevention and Control of Pests and Diseases" Farmland PPT Courseware 2 What impact do pests and diseases have on the growth of crops? Pests eat the leaves of crops; Pests eat the fruits and seeds of crops; Pests damage the root system of crops; Pests can kill crops; Different pests and diseases are harmful to farmers..

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Update Time: 2024-09-28

This template belongs to science courseware E-education edition fifth grade science volume 1 industry PPT template

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Farmland ppt Prevention and control of pests and diseases ppt

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"Prevention and Control of Pests and Diseases" farmland PPT courseware