What are the reasons for rice sitting?

Rice is native to China and India, and was cultivated by the Chinese in the Yangtze River basin about 7,000 years ago. Rice is an important food crop in China and one of the staple foods in southern China. In the past, rice was mainly cultivated in the south, but now the northeast is also a major rice producing area.

The rice planting area is relatively large, spring is coming, the temperature is gradually rising, the flowers are blooming and falling, and it is necessary to enter the rice transplanting season, what is the rice mount? How can it be prevented? Rice bagging planting, also known as hard seedlings, tillering, etc., mainly refers to the abnormal growth of rice plants in some paddy fields under the conditions of clumps, dwarf leaves, dark green or white-yellow leaves, growth stagnation, and less tillering at the tillering stage.

<> the entire root system is yellowish-brown to dark brown. There are no or very few new roots and fibrous roots. Some rice roots are black or even rotten, giving off an unpleasant odor.

This phenomenon is known as "rigid seedlings". After 10-20 days of rice transplanting, the root system of the seedlings was blocked, the seedlings were short and strong, with few tillers, late tillering, stiff leaves, and clusters of plants. The growth period of rice was extended by 10 to 15 days, and the yield decreased by 10 25%, and the yield decreased by more than 35% in severe cases.

This disease is widespread in rice cultivation and seriously affects the increase of rice yield.

Rice false root seedlings generally occur in the early stage of tillering, and there are many kinds of false root seedlings, which are affected by a variety of factors. Chill-damaged rice plants can be divided into two types. The first type is the cold damage type, which is caused by the invasion of low temperature and cold wave after early cultivation, indicating that the rice seedlings do not grow, the new and old leaves are dry, the young leaves are often water-stained, and there are dead seedlings and dead seedlings in the nest.

The other is the low-temperature pulp type, which is caused by the low water temperature in the field of cold rot rust and the performance is that the seedlings are thin and weak, the rice shrubs are short, the tillering leaves are sluggish, the leaf sheath is yellow, the leaf tip has irregular spots, and the leaf tip is yellow from the leaf tip to the base edge, the root system is brown and soft, and the white roots are few and fine.

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This may be due to too many pesticides, or it may be because the weather is too cold, or it may be because of the phenomenon of pests and diseases in the rice, or it may be because the rice is lacking in water, and it may also be because the rice is wilting.

After the rice seedlings are planted, the cold wave and the temperature drops, the growth of rice is affected, and the application of organic fertilizer that is not ripe leads to phosphorus and zinc deficiency in rice, and it is also possible that the rice is planted too deeply, causing its growth to stagnate.

Three days later, there is a cold wave, or when fertilizing is using unrotted organic fertilizer, it will cause the rice to sit on the ground.

Very important. Because in the process of rice planting, transplanting directly determines the survival rate of rice, and also indirectly affects the yield, so it is very important.

Yes, because transplanting is the process of planting rice, and the quality of transplanting technology directly affects the harvest of rice in the later stage, so transplanting is very important.

Yes, it is very important to plant rice in the process of planting rice, so that the rice seedlings can be planted in the land intact and waiting to grow.

In some paddy fields, there is often an abnormal growth condition from the beginning of tillering to the peak of tillering, that is, the rice plants are clustered and short, the leaves are stiff, the leaf color is dark green or whitish and yellow, the growth is stagnant, and tillering rarely occurs. When the diseased plant is uprooted, it can be seen that the roots are aging, the whole root system is yellow-brown to dark brown, there is no or very little new roots and fibrous roots, and some rice plants have black roots or even rot, emitting the smell of hydrogen sulfide. These phenomena are called "sitting", also known as "red blight", or "rust".

It is a common physiological disease of rice, if not prevented and controlled in time, it has a great impact on the yield, and the yield can generally be reduced by l0% 20%, 1. Prevent potassium deficiency and zinc deficiency from causing rice sitting. When applying base fertilizer, pay attention to the proportion of nitrogen, phosphorus, potassium and zinc fertilizer, and increase the kilogram of potassium chloride and zinc sulfate per mu.

2. Prevent root poisoning and rice sitting. For muddy fields, cold soaking fields, etc., 50 kg of grass ash and 15 20 kg of lime can be applied per mu before planting seedlings to neutralize harmful substances such as hydrogen sulfide and organic acids, increase mud temperature, and improve the growth environment of seedling roots.

3. Shallow water rice transplanting. Do inch water live seedlings, shallow water to promote tillering. Deep water, deep cutting, and low mud temperature affect the absorption of nutrients by seedlings.

Therefore, it is necessary to plant seedlings in shallow water to enhance light, increase water temperature and mud temperature, and accelerate fertilizer decomposition, so as to improve the absorption and utilization rate of roots and promote the healthy growth of seedlings.

The object of the present invention is to transplant the former rice seedlings, throw the planting or take the machine to insert the field early, the seedlings sit on the roots, the gods call the green slowly, do not send new leaves, do not give birth to new roots, and then affect the growth of the seedlings, can not form a high-yield seedling frame, reduce the status quo of rice yield, and provide a kind of rice rejuvenation live does not sit on the conditioning agent.

We must grasp the time of sowing, increase some nutrients, apply fertilizer in time, and also apply some organic fertilizer.

The rice is transplanted after knowing the specific growth of the rice, and to ensure the growth of the rice, it is also necessary to water it regularly.

One way is to use zinc sulfate to solve the problem of low temperature, so that the rice will collapse, and the second way is to go to the group to drain the water and dry the field.

Dear, hello, 1. Because rice needs space for panicling, it is necessary to plant seedlings in the silver stage of ear bark. Transplanting alone can give the small seedlings a certain space to grow, so that they can grow sufficiently. 2. The weeds will be removed when transplanting, which avoids the problems of more weeds, low germination rate, low root system, and low overall yield.

3. The spacing between transplanting seedlings is uniform, and the rice has good wind resistance and is easy to manage. 4. Transplanting rice can save time, and the early rice of double-burning sedan season rice can be raised for late rice when it has not yet been harvested, and when the early rice is harvested, the seedlings have grown well, and they can be transplanted immediately.