Discussion on rice pest control technology of rice-fish symbiosis system
Rice-fish symbiosis system Rice and field fish symbiosis is a self-balancing ecosystem. The most common problem with this planting pattern is pests and diseases, but this green and efficient method cannot be used because of this problem. The following measures have taken effective measures to solve the problem of pests and diseases.
1 Rice-fish symbiosis system
1.1 System Introduction
In the operation of the rice-fish symbiosis system, the rice is transplanted into the water. The small fish are also placed in the water. The small fish grows in the water, and the rice is relatively small, which does not affect the growth of the small fish. In the later period, small fish grow up, rice grows, and small grass grows in rice growth. Fish will use grass as food. Fish swimming in the water will cause the grass to loosen and the growth rate of the grass will increase. However, pests and diseases will occur in this link, and this system will not be popularized until now. This farming method can be traced back to 2000 years ago. As early as the Han Dynasty, people began to grow rice and farm fish.
Rice and fish can form a self-balancing ecosystem. This type of system does not require pesticides and does not pollute the surrounding environment. It is a traditional agricultural model. As early as 1400 years ago, farmers invented this method. In the rainy season, they planted rice, and then sprinkled the fry into the water. When the fry grows, the fish has a weeding effect on rice, and it can also protect The effect of fertilization promotes the decomposition of waste, thereby ensuring that rice can absorb a large amount of fertilizer and promote the growth of rice. Straw can also be used as a sunshade, allowing fish to grow quickly. This system has attracted the attention of the Food Organization of the United Nations and has been listed as an agricultural cultural heritage. This ecosystem seems to be very simple, but there are many technologies involved. The fry should be placed at the right time. If it is early, it will have an adverse effect on the tender rice fields. If it is late, it will lead to fertilizers. dispersion. The amount of fry placed is closely related to the area of ​​the paddy field and the depth of the water. The number of fry placed is not affected by the growth of rice.
1.2 Problems with the rice-fish symbiosis system
In the rice-fish symbiosis system, pests and diseases are easy to occur, and the pests and diseases of rice are very serious. Rice is seriously affected by pests and diseases at the initial stage of growth. Rice sheath blight will appear, and there will be wilting on the leaves, and the withering will show a streak distribution. In addition to the fact that rice itself is prone to pests and diseases, this system can also cause corporate disasters. Small fish can also cause pest problems, and pollution can also occur in the insecticide process.
2 Rice-fish symbiosis system rice pests and diseases
Rice symbiosis system Rice pests and diseases are caused by insects that grow in rice, which can lead to the harvest of the entire paddy field.
2.1 The main causes of rice pests and diseases
Rice is grown under a sufficient water source. Rice is generally grown independently in water during the rice cultivation process. However, in Yunnan, in order to improve the utilization efficiency of the site and water resources, improve the rice-fish symbiosis system. Fish is also cultivated in the environment in which rice is grown. Fish will attract other organisms in the growing process, causing pest problems in rice.
2.2 Technical analysis of rice pests and diseases
In order to improve the problem of pests and diseases in the rice-fish symbiosis system, this problem should be prevented first. In order to effectively solve this problem, we should adopt a certain plan, take reasonable precautionary measures on the basis of mastering certain principles, and comprehensively manage it in the later stage. In the specific governance process, the pests should be treated first, then the rice should be protected, and finally the disease should be prevented. First, growers should understand the problems in rice fields, local departments should improve the propaganda, distribute brochures locally, popularize the causes of common pests and diseases, and propose preventive measures. At the same time as the brochures are distributed, many farmers have a relatively low level of education. They cannot fully understand the contents of the brochures. In this case, they can use group lectures, which will enable local growers to have a deeper understanding of pests and diseases. Save time and save on printing costs. Local farmers can listen to lectures and use biological measures to prevent pests and diseases during their leisure time, thus reducing pollution problems caused by pest management. Before planting rice, you can spray appropriate pesticides on rice and choose the right season to plant rice, which can effectively reduce the incidence of pests and diseases. Using physical measures to control pests and diseases, netting is carried out in places where rice is grown, thereby reducing pest invasion of rice. After adopting basic defense measures, specific rice cultivation methods should be formulated based on local conditions. Improve local farmers' awareness of pest and disease prevention and improve physical control measures.
3 Future development direction of rice-fish symbiosis system
The rice-fish symbiosis system is to raise fish while planting rice, thereby improving the efficiency of breeding and planting. However, there are certain problems in the use of the rice-fish symbiosis system, but these problems can be circumvented through feasible measures. Therefore, in the Yunnan region of China, rice cultivation should be combined with local links to improve the system and improve economic efficiency.
These are all of today's content. The pests and diseases of the rice-fish symbiosis system are important factors affecting their development, but they cannot be abandoned because of such problems. Based on the analysis of the root causes of pests and diseases, we should ensure that problems are resolved in a timely manner. There are many rice cultivations in southern China, and this technology should be promoted in the south.
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