Regarding the occurrence of white spikes and empty glutinous grains during rice planting, it is believed that many growers have encountered it, and in either case, it has an impact on the final yield. So why are these reasons? How to prevent? The following small series will help you introduce.
Rice white spike
The white ear of rice is due to the influence of adverse factors in the growth process, resulting in nutrients and water in the rice plant, which can not be effectively supplied to the ear, resulting in whitening of the rice ear.
Rice empty grain
Rice empty mites are also due to unfavorable factors in the growth process, resulting in rice not being properly fertilized, or unable to develop normally after fertilization, and then forming empty mites, which have a great impact on yield.
Since the above mentioned the unfavorable factors, the following is a detailed description of the reasons for the formation of white spikes and empty granules.
1. Reasons for the formation of white spikes and empty grains in rice
Reasons for rice white spikes
1. Drought. When the rice is in the heading stage, the field is too dry, the water supply is insufficient, and the rice ear does not absorb enough water, resulting in white ear.
2, high temperature. There are two effects on high temperature. One is that it affects pollen fertilization and affects heading. The second is that water evaporates quickly, which will lead to white spikes.
3. Pests. When rice is in the heading stage, if there are too many insect pests in the field, it will affect the normal growth of rice, and white spikes will also be formed, such as stem borer, stem borer, rice planthopper, and giant salamander.
4. Diseases. The disease is similar to the above-mentioned insect pests. The rice can not grow normally. When the heading stage is reached, the white ear is also normal. The main diseases are rice blast, sheath blight and mite.
Reasons for the formation of rice blast
1, temperature. It is also before and after rice heading, when the temperature is higher than 35 degrees (the same is true for less than 20 degrees, generally low temperature occurs in late rice), affecting fertilization, and with the continuous growth, empty granules are formed.
2. Nitrogen fertilizer. If the nitrogen fertilizer is too much or too little, it may cause empty granules. If the nitrogen fertilizer is applied too much, the nitrogen content of the rice leaves will increase relatively, which is not conducive to the accumulation of nutrients, which leads to the empty granules; if the application of nitrogen fertilizer is insufficient, At the heading stage of rice, the leaves will have premature aging and will also form empty mites.
3. Water management. Unscientific irrigation and drainage can also lead to the formation of empty mites in rice. For example, in the early stage of rice growth, the drainage is not timely. In the middle of the season, the field is not dried, or the drying time is too long, and in the later stage, the drainage is too early. There is no guarantee for a certain layer of water. For these reasons, premature aging of rice will occur, which will increase the chance of empty mites.
4, the seed itself. When rice is planted or bred, the cause of its own (such as the purchase of fake seeds), resulting in the development of male and female sexual organs, can not be normal fertilization, resulting in empty granules.
The above content is the reason for the formation of white spikes and empty glutinous rice in rice. The reason is understood. In the prevention and control, it is more targeted. The following is a detailed explanation of how to prevent and prevent the two. It is recommended that everyone prevent it. the Lord.
Second, rice white spikes and empty mites prevention and control measures
Prevention and control measures of rice white ear
1. Seed dressing before sowing can not only prevent pests and diseases, but also improve certain resistance.
2, water management to keep up, especially the friend who planted a season of rice, the field is prone to drought, timely irrigation.
3. If there are too many insect pests in the field, such as Chilo suppressalis, Sanhuai, Datun, etc., timely drug control, there are many insecticides on the market, you can choose chlorantraniliprole, Avi, chlorpyrifos, Bacillus thuringiensis (Auxiliary) and other chemical control, can not prevent one time, can be played several times, especially before and after the heading period.
4. If there are too many diseases in the field, it is necessary to prevent and treat the drugs in time. It is better to fight drugs in the immediate onset. For example: the sheath blight can choose azole fungicides, such as propiconazole, diniconazole, hexaconazole, etc. Rice blast can choose rice glutinous rice, prochloraz, etc.; blastling disease can choose evil lingering, etc., like insect pests, once, not many times, under normal circumstances, in the actual fight process, insecticides and sterilization The agents are all used together.
Rice empty grain prevention and control measures
1. It is necessary to pay attention to the selection of varieties. In the case of suitable local seeds, the varieties with strong resistance to insects and disease resistance can reduce the incidence of empty mites to some extent.
2, water management is very important, irrigation and drainage should be moderate, especially in the middle and late, timely drying of the field, is conducive to the growth of roots, has an effect on the overall growth of rice plants, in addition, for low temperature conditions in late rice planting It is also possible to increase the low temperature by watering to ensure the growth of rice.
3, do not use too much nitrogen fertilizer, do not blindly apply urea, other phosphate fertilizer, potassium fertilizer and medium and trace elements, but also to supplement together, can be applied to the fertilizer.
All of the above are the reasons for the emergence of white spikes and empty grains in rice, as well as prevention and control measures. I hope to bring some help to everyone. In order to ensure rice production, we should pay attention to these two issues.
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