Causes and Control of hypoxia in Rice Roots

Rice is a kind of crop, most of which are self-sufficient in family cultivation, but some are planted on a large scale and listed for sale after harvest. However, growing rice requires us to prevent many problems, among which the lack of oxygen in rice roots is one of them. Hypoxia in rice roots will lead to many related problems, such as yellow leaves, rigid seedlings and so on. So what is the cause of hypoxia in rice roots? How to prevent and cure it? Let's have a look!

1. Too much water

The reason: too much water in the soil will lead to lack of oxygen in rice, because the soil infiltrates into the water too much, so that the soil is completely in a state of water stains, forming a closed space. Especially after the rainy day, the drainage function of many planting areas is weak, or farmers watering improperly, so that the rice fields are in a state of stagnant water for a long time. As a result, the roots were immersed in water for a long time, unable to breathe, and the oxygen content was insufficient, resulting in hypoxia in rice.

Prevention and control: strengthen the drainage capacity of rice fields, reasonable irrigation, to prevent excessive accumulation of water in rice fields, in case of continuous rainy weather, ditches should be opened in time to prevent the occurrence of hypoxia symptoms.

2. Soil causes

Reason: the PH value suitable for rice growth is about 7, when the PH value in the soil does not meet the needs of rice growth, it will affect the root respiration. And when the soil is slightly acidic, it will lead to soil consolidation, and the soil can not be ventilated in time, resulting in hypoxia. Mainly because farmers do not pay attention to the rational use of fertilizer, excessive use of chemical fertilizer or some acidic fertilizers, resulting in the reduction of soil organic matter content, so that the soil gradually solidified. The situation is more serious when there is no water in the soil, and the rice roots are unable to breathe and lack oxygen.

Prevention and treatment: increase the application proportion of organic fertilizer, reduce the use of chemical fertilizer, for the already acidic soil can use alkaline substances such as quicklime powder to neutralize soil acidity and alkalinity. Ploughing and cultivating the soil regularly to enhance the permeability of the soil, strengthen the respiration of the roots, and increase the oxygen content of the soil.

3. Environmental discomfort

Reason: drought after continuous rainy weather or sudden rainstorm after continuous dry weather will cause hypoxia in the roots. Especially in spring and summer, when it rains first and then dries, the soil forms thin mud in the rainstorm, and then passes through the sun, causing the soil to become very dry and hard. Its density will also increase, resulting in the root can not be ventilated in time and lack of oxygen, and the situation is similar to that of drying first and then rain.

Prevention and control: strengthen the management of paddy fields, regularly plough and loosen the soil, reduce soil density, improve soil permeability and promote root growth and development.

The above is a brief introduction to the causes and control methods of hypoxia in rice roots. In fact, you may have found that the most fundamental control method is to improve soil permeability and increase soil oxygen content. That is, we need to manage the most basic work in planting, so we must pay attention to prevent the hypoxia of rice roots from rigid seedlings, yellow leaves, premature senescence and a series of physiological phenomena that are not conducive to the growth of rice.