What measures should be taken to rectify diseases and pests in crops? The following describes rice as an example.
Rice pests and diseases mainly include rice planthoppers, rice leaf roller, leaf borer, rice sheath blight, rice blast, rice smut, rice black-streaked dwarf disease, and southern rice black-streaked dwarf disease.
First of all, we must do a good job of prevention and control of rice pests and diseases. Adhere to the general strategy of "Pest prevention at seedling stage, relaxation of tillering period, protection of heading stage" for pest management in rice fields, and vigorously promote the cultivation and control of harmful substances, control of biological agents, physical control, ecological control, and chemical control of high efficiency, low toxicity and low residue. Harm and other technologies. The main push technologies are cultivation and ecological control techniques, general prevention and control technologies, and scientific drug use technologies, drug compliance, and standardized drug use; resistance control techniques for pests and diseases such as borers, rice planthoppers, and rice leaffolders.
In general, the specific prevention and control is divided into the following three stages:
1 Rice sowing till the seedling stage: Do a good job in seed treatment, focus on the prevention of species-borne diseases (bakanae, rice blast, acanthopanax, etc.); timely control of planthoppers, whitebacked planthoppers, prevention of insect-borne diseases (virus diseases) ); do a good job Putian locusts, fleas and other control.
2 rice break period: focus on the prevention and control of rice planthoppers, rice leaf roller, aphids, panicle blast, rice smut, sheath blight and other pests and diseases. According to the characteristics of rice varieties, major pests and diseases, the degree of occurrence, and the occurrence period, the indictors should be determined according to local conditions, and the rational compounding agent should be used to treat "main" and "secondary" to achieve the effect of "one spray and multiple preventions."
3 Rice heading: According to the actual occurrence of pests and diseases, rice planthoppers are the main targets of treatment, while also treating other pests and diseases.
In the prevention and control process, different types of pesticides should be alternately used in order to delay the development of drug resistance. When applying pesticides, the field should try to keep the shallow water layer and dry fields, and increase the amount of water to ensure the control effect.
It is far from enough that light and light require farmers to take preventive measures during the growth and development stages of crops. It also requires relevant departments to improve and perfect the monitoring and early warning system for major diseases and pests of crops. This is an important basis for disaster prevention and reduction of agriculture. In Zhejiang, the frequency of fulminant, migratory and epidemic pests and diseases has accelerated, and the risk of the introduction of exotic pests has increased, posing a major threat to agricultural production in Zhejiang. In order to strengthen the ability to resist agricultural biological disasters, reduce the risk of introduction of alien pests and dangerous quarantine pests, and ensure the safety of agricultural production, during the “Eleventh Five-Year Plan†period, Zhejiang Province invested in support of the Ministry of Agriculture and the provincial government. 11 national-level regional stations, 44 provincial-level regional stations and major pest and disease surveillance sites. The use of these stations has played an extremely important role in improving the monitoring and early warning capabilities and level of prevention and control of major pests and diseases in Zhejiang, safeguarding the safety of agricultural production, quality and safety of agricultural products, and safety of agricultural ecological environment, and has achieved significant social and economic benefits. And ecological benefits.
Through the implementation of the project, advanced equipment such as computers, digital cameras, multimedia, pest surveys, automatic insect traps, spore traps, meteorological instruments, etc. (wherein pest survey statistics are mainly used in agriculture, forestry, quarantine, etc. The pest prediction, forecasting, early warning, and research work have played a very good role in preventing diseases and pests in crops in Zhejiang Province. It has changed the situation in the past that the means of forecasting were simple, the instruments used for measurement were original, and the data collection was in disorder. The sorting of data and the establishment of a database of disease and insect data have improved the collection of information and data on major pests and diseases, and basically formed a monitoring and warning network for major diseases and insect pests with “efficient operation and rapid responseâ€, which has increased the capability of early warning of major pests and diseases. And disposal levels.
Clutch Disc For Tractor,Tractor Clutch Plate,Truck Clutch Plate,Dual Disk Clutch
Zhejiang Yuanjin Auto Parts Co., Ltd. , https://www.vvk-clutch.com