At present, China's cultivation technology has been significantly improved to a certain extent. It has gradually formed a complete set of techniques and management processes for different types of vegetables, such as unique cultivars and water and fertilizer management, thus promoting the smooth realization of standardized production.
1 Status of modern agricultural technology
Today, with the growing development of agricultural plastic greenhouse technology in China, the role of greenhouse greenhouses in modern agricultural vegetable cultivation technology has gradually emerged, and it has had a profound impact on the construction of modern agricultural systems. With the improvement of greenhouse technology, modern agriculture has shown the following remarkable advantages while developing: First, the agricultural production methods are increasingly large-scale. Today, with the modernization of agricultural production systems becoming more and more perfect, some key industries have begun to develop in the direction of scale, and the use of collective management has led to a significant reduction in production costs, which has led to the gradual enrichment of vegetable supply.
In the process of modern agricultural scale production, modern regional management can promote the significant reduction of resources in terms of expenditure to a certain extent, and farmers have established a good brand effect and began to pay close attention to people, which promotes modern agriculture to a certain extent. Secondly, the continuous development of modern agriculture presents its own distinctive characteristics. During the process of agricultural development, the characteristics of modern agriculture and its unique advantages have been continuously demonstrated. At present, agriculture has begun to be commercialized. The direction of industrialization, industrialization and integration has been continuously developed. At present, agriculture has already evolved into a pillar industry of China's national economy. In the process of development, the level of agricultural production technology is increasing, and many resources are beginning to be continuously produced in the agricultural production process. The gathering of the land has caused a qualitative change in agricultural production.
2 Analysis of agricultural vegetable cultivation techniques
2.1 Selection of shed film
For agricultural vegetable cultivation, the choice of shed film is a very important aspect, which has a direct impact on the final planting effect of vegetables. Under normal circumstances, the shed film should be used as much as possible in the process of selecting the film, which is non-toxic, high in light transmittance, strong in pulling force, long in use, and good in heat preservation and yield increase. The ultimate purpose of the selection of the shed film is to be able to grow vegetables with no pollution and good drip performance. Because the shed film has a very good light transmittance, to this extent, it is necessary to increase the light required for vegetable growth to a certain extent. Compared with the general agricultural film, the shed film can promote the increase of vegetable yield. At present, the non-drip insulation anti-aging film and the high-insulation non-drip anti-aging film are the most widely used in China.
2.2 Lighting control
"All things grow by the sun" is a well-known simple truth. In the normal growth process of vegetables, illumination is a very important factor. For the final yield and quality of vegetables, the light intensity can have a direct impact. For this reason, we must effectively use natural light while growing vegetables. Vegetable yield can be significantly increased by artificial light supplementation. In the early spring and winter, it will be affected by the weather. The natural light is not particularly strong. In order to promote the effective protection of the temperature in the greenhouse, some other substances are usually added to the surface of the greenhouse to reduce the shed. The purpose of the internal temperature, for this reason, the daily response to the growth of vegetables should be taken accordingly, through artificial light, to help vegetables receive more light, increase the yield of vegetables.
2.3 Take timely ventilation measures
In the specific growth process of agricultural vegetables, there are specific requirements for the external temperature. If the external temperature is too high, it is necessary to take corresponding cooling measures in time to ensure the normal growth of vegetables. In greenhouses, the purpose of promoting vegetable growth is often achieved by means of cooling: cooling in a ventilated manner, or cooling down to achieve the purpose of cooling. Shading without ventilation can well promote the temperature in the greenhouse by about 5°. Effective ventilation can not only reduce the temperature in the greenhouse, but also ensure that the air in the shed is very good. In a good state of circulation, the other harmful gases are excluded for the first time, so that the probability of occurrence of vegetable diseases in the shed will be well reduced. In addition, it can also promote the photosynthesis of vegetables and increase the yield of vegetables. During the ventilation process, it is necessary to pay attention to the position where the vents need to avoid the wind shelter. It is necessary to constantly change the orientation of the vents, and to ensure the change of the ventilation volume, the temperature cannot be rapidly reduced at the position of the vents.
2.4 The choice of strong seedlings
In the process of planting vegetables, some can be directly sown. Most vegetables need to be pre-planted and transplanted. Some vegetables like melons and fruits need to be cultivated. Only when strong seedlings are selected can they achieve high yield and high efficiency. Final goal. At present, some vegetable seedlings are usually three kinds of vegetable seedlings, summer shading and seedlings, and winter and spring conservation seedlings. Therefore, in the process of selecting strong seedlings, it is necessary to select some vegetable roots as short and tight as possible; Short and dense, the leaves are large and thick, the leaves are dark green; there is no damage, no pests and diseases, and the vegetable seedlings are strong and even, and the vegetable seedlings can be selected from the roots during the transplanting process. In this way, it can effectively protect most root hairs, and it can also promote the further increase of early vegetable production.
2.5 Fertilization requirements
In the fertilization operation, it is usually based on organic fertilizer, and some base fertilizer can be applied properly. However, in the whole process of fertilization, the most appropriate fertilization type must be selected according to the type of vegetables and the soil condition to ensure the proper amount of fertilization. In addition to this, it is important to ensure the ventilation and ventilation properties of the soil in the vegetable growing area. When fertilizing vegetables in peacetime, it is best not to use base fertilizer or top dressing for a long time. We can add proper amount of trace elements to the fertilizer to ensure that the fertilization as a whole reaches a state of balance.
With the rapid development of modern agricultural vegetable cultivation technology, people's quality of life has been significantly increased. However, under the current situation of increasingly serious pollution and serious shortage of land resources, how to promote vegetable cultivation technology and promote vegetables The continuous increase in quality and output is the permanent responsibility of agricultural technicians.
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