Why do I need to dry my seeds before planting? What s the saying?

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.

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.

Drying rice seeds before sowing can effectively improve the germination rate and germination potential of seeds, and the main reasons are:

1. Drying seeds can promote the post-ripening of seeds and improve the activity of enzymes. After the harvest of rice seeds, although they are dried and cleaned before entering the warehouse, due to the different maturity and dryness, the air humidity and temperature during storage will also change, if the seeds absorb moisture, the respiration is vigorous, and the nutrients in the seeds are consumed more, which often leads to the weakening of the germination ability of the seeds, and the germination potential is reduced.

2. Drying seeds can promote oxygen to enter the inside of seeds, and free oxygen is needed for seed germination, oxygen is the primary condition for the embryo to form gibberellin or convert the gibberellin in the bound state into free gibberellin, gibberellin can induce the formation of A-amylase, catalyze the degradation of starch into soluble sugar, for the respiration of the embryo and the formation of new cells in young roots and shoots.

3. Drying seeds can reduce the concentration of chaff A, chaff amine B, ionic acid and vanillic acid, which have an inhibitory effect on germination when the concentration of these substances is high.

4. The short-wave light in the solar spectrum, such as ultraviolet rays, has the ability to sterilize, so the sun-dried seeds have a certain sterilization effect.

Summary. 1. It is very important to loosen the soil first when planting, and we must use a hoe to loosen the land first to ensure that the soil inside is not piecemeal by piece. 2. Then we need to sow the seeds, and then we have to sow the seeds in a soft place on the ground, so that the ground can quickly absorb the components of the seeds for germination.

3. Finally, we need to sprinkle a layer of fertile fertilizer on the soft soil, and then water it, so that the seeds can germinate well.

Before planting, loosen the land, then sow the seeds, and do what the day after tomorrow.

1. It is very important to loosen the soil first when planting, and we must use a hoe to loosen the land first to ensure that the soil inside is not piecemeal by piece. 2. Then it is to sow and sow seeds, and then after the change, we should sow the seeds in a soft place on the ground, so that the ground can quickly absorb the components of the seeds for germination. 3. Finally, we need to sprinkle a layer of fertile fertilizer on the soft soil, and then water it, so that the seeds can germinate well.

Then sprinkle fertilizer and water.

Before sowing, the pepper seeds are dried in the sun, one is to use the ultraviolet rays in the sunlight to kill some of the pathogens on the seeds, and reduce the diseases at the seedling stage; the second is to increase the body temperature of seeds, promote the transformation of nutrients in seeds, and enhance the germination potential of seeds; The third is to reduce the water content of seeds, enhance the water absorption capacity of seeds, and shorten the time required for soaking.

Pay attention to the following points when drying seeds:

1) Do not expose the seeds to the sun during the high temperature period, so as to avoid the high temperature of the seeds or the rapid loss of water from the seeds, which will damage the embryos and make the seeds lose their germination ability or form deformed seedlings.

2) Drying seeds in summer should be carried out under moderate light, and the seeds should be put on paper or cloth to dry, and should not be directly put on the surface of objects such as cement floor or slate that absorb heat quickly and heat up quickly, so as to avoid scalding the seeds.

3) The time of drying seeds should not be too long, and the seeds are easy to lose too much water and have low water content, resulting in deformation of the seed embryo and cotyledons, and grow into deformed seedlings. Generally, depending on the temperature and light intensity at the time of sunbathing, it is advisable to dry seeds for 1 2 days. (4) To choose a windless day to dry pepper seeds are smaller, when the wind is easy to be blown away, when the wind must be dried, pay attention to the wind.

The method of drying seeds is generally to spread the seeds thinly on the mat or cement floor, dry for 1 2 days, and turn them frequently to make the seeds dry consistently. Drying seeds can effectively improve the germination rate and germination potential of seeds. The main reasons are:

1) Drying seeds can promote the post-ripening of seeds and improve the activity of enzymes.

After the rice seeds are harvested, although they are dried and cleaned before entering the warehouse, due to the different maturity and dryness, the air humidity and temperature during storage will also change, if the seeds absorb moisture, the respiration becomes vigorous, and the nutrients in the seeds are consumed more, which often leads to the weakening of the germination ability of the seeds and the reduction of germination potential. After drying seeds, the permeability of the seed coat can be enhanced, so that it can absorb water evenly during soaking, and the activity of enzymes can be enhanced.

2) Drying seeds can promote oxygen to enter the inside of the seeds.

Seed germination requires free oxygen, which is the primary condition for the formation of gibberellin in the seed embryo or the conversion of gibberellin in the bound state to free gibberellin. Gibberellin can induce the formation of amylase, catalyzing the degradation of starch into soluble sugars for embryonic respiration and the formation of new cells in young roots and shoots.

3) Sun-drying can reduce the concentration of glutin Amine, Cythine Amine, ionic acid and vanillic acid, which have an inhibitory effect on germination when the concentration of these substances is high.

4) The short-wave light in the solar spectrum, such as ultraviolet light, has the ability to kill bacteria, so the sun-dried seeds have a certain bactericidal effect.

Drying seeds before sowing: There are many seeds that need to be dried and stored to complete their post-ripening or increase the permeability of the seed coat, and they cannot germinate after harvest, such as impatiens, sorrel, mallow, oak seedlings, morning glory, eggplant, brinelli pansy and so on.

The time of drying and storage is often different with temperature or early, and some seeds can often be accelerated by drying and heating methods, such as 90% of the seeds swelling after 40 degrees Celsius treatment for 6 hours, 98% swelling after 3 hours at 50 degrees Celsius, and only 3% of the control; Therefore, drying seeds before sowing has become a commonly used treatment method in production. Dry and wet treatment means that after the seeds are soaked, they are exposed to the light of Yangliang jujube during the day, and they are retrieved and soaked in the evening.

Key points to be mastered for sowing: (1) Producers should choose their own suitable seeding machine to maximize the effect of inputs. Comparing the advantages and disadvantages of the three types of seeders, such as flat type, needle bridge answering tube type and drum type, and then according to the characteristics of China's current flower production, we recommend that seedling producers use a more economical and practical flat seeder.

2) The sowing accuracy should be high.

3) The position of the seed fall should be as close as possible to the center of the hole.