Why is it that when the rice is sown season, the water in the river rises?

Rice is a grass, and people who like water are planted at the right time according to the habits of rice, and when there is a lot of rain during this period, the water in the river will rise.

Because it rains a lot, the flow of rainwater into the river is greater than the original flow of the river, and the river will rise.

Rice is sown in the summer, and the water in the rivers increases in the summer.

There must be water at all times, otherwise it will not lead to the development and growth of rice. Generally, there is water at the beginning of sowing, there is no water in the later growth process, and there is no water in the picking process.

In the process of rice planting, we need to have water in the field at all times, and when it is almost ripe, then we will release the water.

No, sometimes you will choose to release water, this should be determined according to the wisdom of the growth of water, generally there must be water when planting, and when you need to harvest, you will release water.

No, when releasing water. It is necessary to rely on the growth of wisdom to judge whether it is water or not. Generally, water must be used when sowing and water is released during harvesting.

Rivers provide a high-quality source of irrigation water for rice growth.

The water quality of irrigation water sources, such as the chemical and physical properties of water, the composition and content of pollutants in the water, also have a certain impact on agricultural production. It should meet the requirements of crop growth and development, and take into account the requirements of human and animal drinking and fish growth. When the water quality of the irrigation water source cannot meet the irrigation requirements, it can be improved through engineering measures and biological measures.

Or mix with clean water, meet the standard and then use it for irrigation.

Rice irrigation method:

1. Shallow water irrigation: Except for the roasted field at the end of tillering and the drying out at the yellow maturity stage, the irrigation mode of 10mm-30mm shallow water layer is maintained in other growth stages.

2. Shallow and wet irrigation: Shallow and wet irrigation of rice refers to the combination of intermittent irrigation and irrigation shed in the water layer, with a water layer of 0-30mm, and drying the field at the end of the period. In the rejuvenation stage, booting stage and heading stage, the shallow water layer of 10mm-30mm was mainly maintained, and the roasted field at the end of tillering and the yellow ripening stage were dry, while in other envy and elimination stages, it was mainly moist, and shallow water and wet state alternated.

3. Moist irrigation: the irrigation mode of maintaining a shallow water layer of 10mm-30mm in the field surface during the regreening stage of rice, and maintaining a moist state in other growth stages.

4. Control irrigation: In addition to transplanting to the regreening stage, the field surface is kept in a shallow water layer of 10mm-30mm, and the irrigation mode of the water layer is no longer established in the field after the regreening.

Rice is a water-loving crop, there is also this kind of field in our hometown, it is deep in the mud, there is water for a long time, although there is no big impact on the growth of rice, but it still has a certain impact on harvesting. In the same area, in different regions, one piece of sandy soil is good, and the other is a rotten mud field with a depression, and the yield of sandy soil field is definitely 200-300 catties of rice higher than that of rotten mud field.

After the rice seeds are sown, in order to make the seed buds quickly take root and erect the buds, it is necessary to keep the compartment moist and moist, so that the ditch water is full on sunny days and cloudy days.

Semi-ditch water. On sunny days, the direct sun is strong, and the horse water should be filled to prevent the compartment from drying out. The whole transplanting process of rice can easily lead to root loss, resulting in weak water absorption ability of seedlings, and the water layer should be deepened in time after transplanting to reduce the transpiration of seedlings.

At this time, the water layer should be 1 3 with a seedling height. If the soil is not drained and the field is sunned, the root system of rice still continues to absorb the nitrogen free in the soil in the field, resulting in the nitrogen fertilizer effect lasting too long, which will cause abnormal vegetative growth The rice field has been blistered, the temperature at night is low, which is not conducive to the growth of rice, there is no water, the soil is gradually dry, the heat of the day is maintained for a long time, and the dry and hard soil makes the rice roots tough and strong, less pests and diseases, resistant to pests and diseases, and resistant to lodging.

There is water all year round, and the rice that cannot be dried in the field cannot effectively control the tillering.

And the growth of seedlings, the growth period of rice is longer than that of rice in the sun, and the rice is green and astringent.

It is difficult to show ripe goldenness. Prone to rice planthoppers.

Pests and diseases such as sheath blight and lodging have led to reduced yields and even the end of the harvest in rice fields with water all year round, and there are many aquatic weeds. Every time the rice is planted and fertilized, the aquatic plants absorb the fertilizer. Then the wild growth takes up the space of the rice field and absorbs the soil fertility of the rice field, which can cause the phenomenon of chemical fertilizer waste.

The reason why the water layer in the field surface for a long time has a high rate of hollowing is caused by too much ineffective tillering in late growth. There is a relationship in botany called the "source-sink relationship", and the perennial availability of water in paddy fields not only has no effect on the growth of rice, but is a very favorable growing condition. Just pay attention to the depth of the irrigation water.

Rice is flooded for a long time, the root system is in a state of hypoxia, and the root system is concentrated in the soil surface layer and does not take root, which affects the normal tillering of seedlings. Poor water drainage and irrigation in the paddy field will lead to the accumulation of toxic substances in the soil, the lack of nutrients such as phosphorus and potassium, the poor development of rice roots, and the poor ability to absorb nutrients, resulting in slow tillering and less tillering.

In the process of rice planting, if the water is too sufficient, the roots of the rice will be soaked, and at night it will also prevent the aerobic respiration of the rice, which will have a great impact on the yield.

Positive impact. The role of water in promoting growth, rice is to have water all the time, which is one of the necessary conditions for strong growth.

When rice is grown, there is always water in the paddy field, which maintains the temperature of the rice at an early stage and provides the water needed for rice growth.