Rice sitting seriously affects yield in order to understand the cause of rice sitting in order to prescribe the right medicine.

Rice sitting is what farmers often call rice red blight, and some people call it "stiff seedlings" and "fire wind". Once there is a situation of rice sitting, it will cause a very obvious reduction in rice production, which is also a great headache for growers, so it is very important to understand the reasons for rice sitting and take precautions. Here, to promote agriculture through science, I would like to share with you the problem of rice sitting.

1. The harm of rice trapping.

The most direct impact of rice trapping is the reduction of rice yield. The size of the reduction depends on the situation of rice trapping. Generally, the yield is reduced by about 10% to 20%, but if there is a more serious situation of rice trapping, the yield can be reduced by as much as 50%. It can be said that the harm of rice trapping is very great. However, the specific reasons for rice sitting are very diverse, and the research is relatively difficult, so it is necessary for researchers to continue their efforts.

2. The characteristics and causes of rice trapping.

There are some more vivid names for sitting rice, such as fire wind, iron rust, boiled seedlings, and so on. In fact, from these names, we can see that the rice is rust-colored, as if it had been burned. In fact, the situation of rice sitting is relatively easy to identify, rice generally shows stiff seedlings, rice leaves stand in clusters, ferruginous spots appear on the leaves, slow tillering, short plants, aging roots, and so on.

At present, there are three main explanations for the causes of rice sitting: 1, element deficiency, 2, low temperature chilling injury, 3, water poisoning. However, these three conditions may appear on rice at the same time, which brings great difficulty to the prevention and control of rice sitting.

The main results are as follows: (1) the rice with element deficiency is generally due to the lack of potassium in the planted rice field, which leads to the lack of potassium in the process of rice growth, which leads to poor growth. Generally appear in the rice seedling transplanting two weeks, generally first in the rice leaves scorched tip, spots, small leaves, thin and short roots, root hairs easy to fall off and so on. After the occurrence of this situation, it is necessary to replenish potassium fertilizer to the paddy field and sprinkle plant ash, potassium sulfate and so on. In addition to potassium deficiency, rice may also suffer from zinc deficiency and phosphorus deficiency. For these situations, growers also need to replenish fertilizers in time, such as zinc deficiency and zinc sulfate fertilizers.

(2) low temperature chilling injury is mainly due to lack of light in rice planting area, or more cover of water surface, rainy in rice planting area, long plum rain season and so on. As a result, the root system of rice is underdeveloped and the ability to absorb nutrients is poor. Rice leaves turn yellow and sharp brown spots appear at the tip of the leaves. For this situation, it is necessary to drain the field in time, increase the soil temperature, drain in time in rainy days, and cultivate more seedlings during the seedling breeding period, so as to increase the cold resistance of rice seedlings.

(3) Water quality poisoning this kind of paddy field is generally muddy, the water quality is poor, and the soil fertilizer is not completely mature, resulting in more toxic substances in the soil, such as more bivalent iron and methane, which seriously affect the root growth of rice seedlings. It even causes the roots of rice seedlings to rot, and the water quality stinks. The rice seedlings stopped tillering, the plants were erect, and the leaves changed from green to yellow. For this situation, it is necessary to drain and dry the field in time, sprinkle lime, improve soil permeability and so on.

3. Prevention

In fact, the best way to deal with rice is to do a good job of prevention. Increase the cold resistance and disease resistance of rice seedlings by breeding and strengthening seedlings. In addition, do a good job of silt drainage in paddy fields, rational irrigation, reasonable fertilization, increase the air permeability of the soil and so on. Soil improvement can be carried out in the paddy fields where sitting crop often occurs, and the rotational tillage system with the combination of flood and drought can also be adopted.

The above answer about rice planting comes from developing agriculture through science. I hope it will be helpful to you.