After the wheat seeds are sowed in the soil, they first absorb water, and after enough water is sucked, the starch degrading enzymes in the seeds (which are formed and stored in the seeds during the maturation period) begin to function, degrade the starch, and form small-molecule sugars such as glucose. At a suitable temperature, the germ begins to germinate and grow at about the same time, and consumes sugars that are degraded by starch. At low temperatures, germs sprout slowly, even without sprouting, with little or no consumption of sugar, and the sugar will accumulate in the seeds. Excessively high sugar concentration inhibits germination and embryonic body growth, which in turn exacerbates the accumulation of sugar in the seed body. Eventually, a "sweetening phenomenon" occurs, the seeds become soft and rotten, lose their activity, and do not germinate and emerge. A large amount of sugar in the seeds spills out and it is easy to cause microorganisms to grow. It consumes a large amount of sugars and may also produce some toxic substances that are toxic to the embryos and germs. Microorganisms (including bacteria and fungi, etc.) grow in the seeds, consume large amounts of sugar, and cause excessive nutrients in the seeds to be consumed excessively. Even if some of the seed embryos can germinate, the buds will not be normal due to too few organic nutrients. Growth, and some sprouting buds can not top soil emergence, and some emerged after the formation of weak seedlings, stiff seedlings and even death, and ultimately reduced the rate of seedlings. Wheat is a dry crop. Excessive soil moisture at seedling stage is not conducive to seed germination and seedling growth. When the soil is sowed, the wheat seeds can quickly absorb enough water after entering the soil, and the starch degrades to form sugar. If the temperature is high, the oxygen supply is sufficient, and the germination of the wheat germ is also fast, basically not affecting the germination and emergence of the wheat seed. If the temperature is low, the embryo germination is slow and the consumption of sugar is small, and the "sugar phenomenon" will occur, affecting the germination and emergence of the seed. If the temperature is high, but the oxygen supply is insufficient (when the soil moisture is too high, it will affect the oxygen supply. The seeds of the soil are more likely to be deprived of oxygen). The embryos or young sprouts will be anaerobicly respired due to lack of oxygen to form alcohol, resulting in alcoholism. It will also affect seed germination and emergence. Wheat seed dressing treatment, the types of drugs used, can not be generalized. Triazoles, tebuconazole and other azole fungicides will inhibit the formation of gibberellin in wheat. Dressing with these drugs will inhibit the formation of gibberellin in young shoots, thereby inhibiting shoot growth. In the normal amount of disease prevention with these drugs mixed with wheat seedlings, the emergence of normal conditions can cause slower emergence of seedlings, the emergence of extension (the seedling body will therefore become more short and robust, which is a favorable side). In the case of ground rot and high temperature, the use of these drugs for seed treatment has less adverse effects on seed germination and emergence, and has a beneficial effect. In the case of ground rot and low temperature, the use of these drugs for seed dressing will delay the sprouting of wheat sprouts, which will increase the occurrence of “sugarball phenomenon†and reduce the emergence and seedling rate. Of course, the use of these drugs for seed treatment can reduce the growth of microorganisms to a certain extent, and will help increase the rate of emergence and seedling establishment. However, under low temperature and high humidity conditions, this effect is often small, and it is often difficult to make up for the increase in "sugarballing." "The negative impact on seedlings and seedlings. Bromocronitrile, carbendazim, thiram and other fungicides, insecticides such as imidacloprid, for seed treatment, no inhibition of seed germination and sprout growth, or inhibitory effect is very small. In the condition of low ground and low temperature, seed dressing with these drugs generally does not aggravate the adverse effects on seedling emergence and seedling emergence, and the use of these drugs for seed treatment can reduce the risk of microbial breeding and underground pests to a certain extent. It is beneficial to increase the rate of seedling emergence and seedling establishment. Therefore, the use of these medicines for seed dressing under conditions of low ground and low temperature usually outweighs disadvantages. Others Medical Accessory Device We're professional Others Medical Accessory Device
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In addition, there are some plant growth regulators, such as BAIJIE CHIAOJIN JIAO, AIDUSHENG SODIUM PROPIONATE etc., which contain active substances that promote the growth of wheat buds and improve the resilience of malt. Under low temperature and high humidity conditions, The use of these drugs for seed treatment is beneficial to reduce the "sugar phenomenon" and increase the emergence and seedling rate. But paclobutrazol and other plant growth inhibitors will inhibit the growth of wheat shoots. These drugs should not be used for seed treatment under low temperature and high humidity conditions. Otherwise, they will increase the "sugar phenomenon" and reduce the emergence and seedling rate.