Why do you have to dig and dry for a few days before planting? What is its purpose?

For long-term ploughing fields, the technical nature of deep excavation of agricultural machinery subsoiling and re-exposure can reasonably adjust the soil layer structure and improve reasonably, get rid of the lowest part of the relatively limited long-term ploughing and rake cultivation, and then reasonably improve the natural environment for the growth of crops, so as to increase production and income at a smaller cost. According to the deep excavation of the soil layer after subsoiling of agricultural machinery, because of its soil layer vegetable pine, it is beneficial for precipitation to penetrate into the bottom end of the field, and the surface soil layer after subsoiling is not smooth, which can block the direct current of flowing water, ensure soil erosion and frightening deep time, and then achieve better water storage and water locking practical effect. Repeated deep excavation of agricultural machinery subsoiling land resources can interchange and adjust the elements required by plants due to the lack of shallow cultivated land, so as to improve soil texture, promote gas exchange in soil layer, facilitate its biological activity and mineral dissolution, neutralize the soil layer, and improve soil organic matter.

Deep digging and loosening of farmland can improve the dissolution ability of the soil layer to organic fertilizer, reduce the evaporation outflow due to poor dissolution, and then improve the use rate of organic fertilizer. After digging deep into the soil layer of agricultural machinery and subsoiling, because of its good air permeability, loose soil layer and vegetables, and sufficient growth and development elements, it is more beneficial to the root growth and development of crops and thorough digestion and absorption of nutrients, so as to increase production and income. After the land resources are turned over, when the soil layer is white, and the stones can be loosened by a little pinching, or they can be scattered according to the sun's exposure.

After the field is dried, quicklime powder should be applied to carry out disinfection and sterilization of the whole field, and the field with excessive acid and alkalinity can take the opportunity to improve the soil layer, balance the soil acidity, and at the same time apply enough organic fertilizer and then plant the whole field.

The excavation is due to the fact that the natural light is a natural and high-efficiency pesticide fungicide, and it can kill the larvae in the land resources. It is the soil layer that invisibly disinfects, sterilizes, and kills eggs. And in the spring, it can raise the soil temperature.

In this way, even if the outside air temperature is sometimes cold and sometimes hot, it will not jeopardize the reasonable integration of temperature and water necessary for seed germination. And on the ground of the taxi, which is not a large-scale cultivated land, the farmer brother pits all use a little water after plowing, **, cover the soil and: and then cover the plastic film, in order to better consolidate the soil and raise the temperature.

After excavation, it will take a few days to dry before it can be planted, if it refers to dry land, then it is called Kang field, and the rice field is the same as deep ploughing and shoveling soil. It is said that a small piece of dry land is dug with a hoe, a shovel is dug deeply, the soil on the surface is turned down, and the main thing is to dry the soil. As long as you have burned fire dung, you can understand why, in the past, the earthen walls of rustic houses were the most fertile soil.

The old house can be planted for many years, and the crops with high moisture content and wet soil will not grow. Just like the ghost pulling, the field subsoiling can't be infinitely subsoiling, turn the old bottom raw soil down and try it. Maintaining the depth of the soil foot is a little deeper every time it is excavated, and the crop will still lose gas after digging too deep.

The key to sun exposure is called the kang field, and the better the kang field, the better the crops.

This is also a relatively normal phenomenon in rural areas, because it can better loosen the land and improve the fertility of the land.

It should be 1 to 2 days. In this way, the yield can be increased, the transport and air permeability of the soil can be improved, the absorption and growth of the root system can be promoted, and the germs can be eliminated.

If the land is not ploughed for a long time, there will be a lot of bacteria left in it, and the sun will be exposed to ultraviolet rays for a long time.

Killing these bacteria makes the soil more fluffy, and the missing oxygen content in the soil can be replenished, which is beneficial for the root growth of plants.

It can improve the germination rate of seeds, enhance the germination potential of seeds after drying, shrink the seeds of water loss, enhance the air permeability of the seed coat, enhance the water absorption ability of seeds after sowing, improve the germination potential, and increase the germination rate of seeds. It can kill germs and pests The wheat seeds taken by farmers are generally not coated, and many residual germs on seeds and insect eggs are adhered to and hidden.

Such as powdery mildew, whitefly, rust, etc., we have learned that the effect of drying sterilization and insect control is very good; The incidence of wheat powdery mildew, whitefly and rust decreased significantly after drying seeds. Promote seed maturity Most of the wheat after harvest is not fully mature in the case of entering the Cen Ling stage, if not dry direct sowing, will cause the emergence of the disease, seriously affect the yield of wheat, the increase of weak seedlings is in the sun, in the high temperature conditions, is conducive to the formation of seed assimilation substances, complete the physiological maturity of seeds, so that the seeds are fully mature.

Drying seeds is the drying of seeds in the sun. Taking rice as an example, drying rice seeds before sowing can effectively improve the germination rate and germination potential of seeds, the main reason is that drying seeds can promote the post-maturation of seeds and improve the activity of enzymes.

After harvesting, although the rice seeds are stored again after drying and cleaning, due to the difference in maturity and dryness, the air humidity and temperature during storage will also change, and if the seeds absorb moisture, respiration, and nutrients are consumed on the seeds, it will often lead to the weakening of the germination ability of the seeds.

The germination potential is reduced, and after drying, the passability of the seed can be enhanced, so that it is uniform in the soaking water, and the activity of the enzyme can be improved. Exposure to the sun can promote oxygen to enter the inside of the seed, the seed germination needs free oxygen, oxygen is the primary condition for the embryo to form gibberellin or combine gibberellin into a free state, GA3 can induce the formation of A-amylase, catalyze the degradation of soluble sugar, support starch to be respirated by the embryo and young roots, germ to form new cells. Drying seeds can reduce the concentrations of A, B, chromatography acid and vanillic acid in rice husk.

Because this increases plant production and prevents the appearance of pests and diseases, and it also allows plants to grow well, it is important to dry seeds before planting.

Drying seeds can remove some of the water in the seeds, which can improve the germination rate and make the seeds germinate quickly, so it is necessary to dry the seeds.

Because this makes the seeds more vigorous and can grow better. It can also be better planted.

Why Dry Seeds? Peanuts are stored there for long periods of time and have a lot of humidity, which can be affected by pathogens and pests in the environment, resulting in reduced seed vigor and low emergence rate. When drying peanuts, the ultraviolet rays in the sunlight can kill the bacteria that attach to the peanut shell and also improve the activity of the peanut seeds.

The specific method of drying peanuts is: after 11 o'clock in the morning, spread the peanuts to a sunny place, the thickness is generally about 8 cm, not too thick, too thick to be transparent, dry until one o'clock in the afternoon, if you can't see the sun, you can call it a day.

<> remember: don't just dry peanut seeds, drying peanut seeds alone will cause seed burns, so the emergence rate is lower than that of no peanuts. Before sowing peanuts, what is also needed is seed dressing, after dressing seeds with pesticides, it needs to be sprinkled in a cool and ventilated place to dry, and it must not be isolated.

In summary, the emergence rate of shelled seeds was higher than that of undried peanuts, and the emergence rate of undried peanuts was higher than that of sun-dried peanut seeds.

A day or two before planting peanuts, put the peanuts on the ground to dry for a few hours, using the sun's ultraviolet rays to kill the viruses and bacteria on the peanut skin and wake up the sleeping spores. Be careful not to expose the seeds directly to the sun on the concrete floor, so as not to steam the sprout cells inside the seeds. After being exposed to the sun, various cells in the body are activated.

After sowing, it can quickly adapt to the temperature in the soil, quickly bud and emerge, and has strong resistance to viruses. When sowing peanuts, it is best to mix seeds with seed dressing agent to prevent pests from harming the seeds. In order to ensure that the seedlings are strong and strong, lay a good foundation for peanut production and income.

Because the area we plant is not small, and there are many varieties of peanuts, in order to prevent the peanut germ from being destroyed, we all peel rice by hand. There is no time to peel a few days before planting. It is possible to dry the seeds before sowing only if the peanuts are peeled by a machine.

The machine for drying seeds is broken. Peeled peanuts may also damage the seed germ, and the germination rate is not as good as that of sun-dried seeds.

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Drying seeds before sowing can effectively improve the germination rate and germination growth of seeds, and the enzyme activity in the seeds can be improved after drying, so that the seeds are not wet, reduce the possibility of mildew, avoid bad seeds and rotten seeds, and sunlight also has the function of sterilization, and can also promote the rapid maturity of seeds.

The purpose of drying seeds before sowing is to improve the vigor of seeds and improve the emergence rate of seeds; Because the seeds stored before sowing may have been damp, there will also be pests and diseases, if not sun-dried, it will reduce the emergence rate, sunlight can kill the bacteria on the seeds, improve the activity of seeds.

Because the seeds are dried before sowing, the seeds can better exert their photosynthesis, and can germinate quickly, reducing the situation that the seeds cannot germinate when they are wet. And the seeds are dried, which can be well mixed with other organic fertilizers, which can increase the germination rate.

Because drying seeds can improve the activity of enzymes and the post-maturity of seeds, it has a very strong bactericidal effect, improves the water absorption ability of seeds, and the germination rate and germination growth of seeds can be improved; Drying seeds can remove moisture so that it will not become moldy and spoiled, which will affect germination.

Because in this way, the effect of warming can be achieved, and then the germs outside the seeds can also be killed, and then the pests and diseases at the seedling stage will be reduced, and then the seed temperature can be increased, which can promote the conversion and growth of nutrients.

Because drying seeds can improve the activity of enzymes and the post-ripening of seeds, it has a strong bactericidal effect, improves the water absorption capacity of seeds, and improves the germination rate and germination growth of seeds. It will not mildew and deteriorate, affecting germination.