Agricultural knowledge suitable for primary school students, and what are the agricultural activitie

1. Vegetables. Take children to observe, touch, and pick their favorite vegetables, show the different growth periods of vegetables, and introduce the life of vegetables.

Second, succulent. Prepare succulents.

Potting soil, small containers, making succulent potted plants.

3. Seeds. Understand the germination conditions of seeds, the different structures of seeds, identify the seeds of various crops, and hand-draw the seed germination process. You can also plant your first plant with your own hands.

4. Animals. **Animals, feeding animals, explaining the living habits of animals.

5. Bring outdoor natural landscapes indoors.

The miniature nature landscape can be moved outdoors indoors, and real trees, sand and stones, flower beds can be placed in a corner of the kindergarten, or a small garden can be built, so that children can get in touch with the real natural situation.

When creating an environment, teachers can also guide children to pay attention to the natural elements of outdoor and indoors, invite children to join in the preparation and arrangement of materials, find suitable and favorite materials and scenes outdoors, and jointly build a natural corner of the classroom.

I think it is very important to give primary school students the learning of agricultural knowledge, I am an agricultural reporter, now children can not distinguish too much wheat seedlings and leeks, if you want children to learn agricultural knowledge, the most important thing is to take more children to practice, you can actually pick, to observe, to understand the growth state of various crops.

One (the role of the medium element.

1.The role of calcium on crops: Calcium is a nutrient necessary for the growth of crops, and his main role in crops is: ?

Combined with pectic acid, which is indispensable for the generation and strengthening of plant cell membranesMeasure the growth of the root system;Necessary for carbohydrate metabolism;

It has the effect of eliminating other ion poisoning, such as eliminating the poisoning of hydrogen ions, ammonium ions, aluminum ions, magnesium ions, potassium ions, etc., which is called ion antagonismIt is used in crops to neutralize the role of organic acids.

Agricultural activities suitable for elementary school students include growing fruits and vegetables, observing the growth of fruits and vegetables, and so on.

Significance of agricultural activities:

At present, most primary and secondary school students in cities "only know the aroma of the food on the plate, but do not know how the crops grow", and even make a lot of jokes. Moreover, their extracurricular life is more about shuttling between interest classes and cram schools.

or play with electronics with your head down. It makes sense to give them a make-up course related to agricultural labor.

On the one hand, it is beneficial for students to understand the culture of farming.

Agrarian civilization is the Chinese civilization.

The origin of the essence of the requirement is to watch over the countryside and work hard. Moreover, China is a big agricultural country, and agriculture is the basic industry of our country. Through the experience of learning agriculture, students can feel the agricultural civilization, help students understand the spirit of Chinese civilization, and have a positive guiding role in their future development.

On the other hand, this is conducive to cultivating their concept of labor and the spirit of enduring hardship. "The four bodies are not diligent, and the five grains are not separated" is a true portrayal of many children in reality.

Children don't like to work, which is related to the pampering of the family, and it is also related to the separation of life from labor.

Allowing students to participate in labor in the form of courses can promote students to gradually develop a correct concept of labor and the spiritual quality of bearing hardships and standing hard work in labor practice.

(1) What is pollution-free.

Pollution-free vegetables refer to vegetables that are not contaminated by harmful substances, and some are called green vegetables or clean vegetables. In fact, it refers to the fact that commercial vegetables do not contain toxic substances, or the content of toxic substances is controlled within the allowable range, that is, pesticide residues do not exceed the standard, nitrate content does not exceed the standard, the "three wastes" harmful substances do not exceed the standard, and pathogenic microorganisms do not exceed the standard. If it meets the above standards, it can be called pollution-free vegetables.

With the development of science and technology and the improvement of people's living standards, China is very concerned about the production and pollution-free vegetables and green food. In the production of vegetables, people's understanding of the ecological environment has been deepened and improved, and it is generally noted that nitrates in industrial pollution, pesticides and fertilizers enter the human body through the food chain, which will cause certain harm and even endanger lives. For this reason, people's requirements for the quality of vegetables are becoming more and more stringent, and the call for the production of green vegetables is getting higher and higher.

Therefore, the use of scientific methods, based on ecology, environmental protection, and sociology, to produce pollution-free vegetables is not only to meet the needs of urban and rural people for clean vegetable baskets, but also to be related to thousands of households and even future generations.

b) What is green food.

Green food is a pollution-free, safe, high-quality and nutritious food that follows the principle of sustainable development, is produced in accordance with a specific production mode, and is recognized by a specialized agency and licensed to use the green food mark trademark.

3) What are pollution-free agricultural products.

Pollution-free agricultural products refer to high-quality agricultural products and primary processed products whose safety and quality meet the relevant mandatory national standards and laws and regulations.

4) What are the similarities and differences between organic food, green food, and pollution-free food.

Organic farming is a completely different or almost non-synthetic growing system of fertilizers, pesticides, production regulators and livestock feed additives. The draft standard prohibits the labelling of genetically engineered and irradiated products as organic at the request of the public. It is a kind of all-natural, pollution-free, commercial food.

It is an environmentally friendly food that is recognized internationally. Green food is a sustainable agricultural product with Chinese characteristics formed from China's national conditions and combined with the development trend of the world's advanced agriculture. Pollution-free food contains the basic characteristics of organic and green food, and is a transitional food for green food.

All of them are sustainable foods for the purpose of safety, environmental protection and health, and represent the future development direction of China's food.