(Reporter Chen Xiaojie) Vegetables are planted in standardized pipelines with a fixed spacing between plants and plants. Pipes are continuously fed with fertilizer and water to provide nutrition for the growth of vegetables. Vegetables do not have to worry about the sun and the rain. Greenhouses can be They shelter the rain. This is the scene that the reporter recently saw in the hydroponic vegetable base of Hailan Village in Shijie Town. According to Cheng Decheng, the person in charge of the hydroponic vegetable base, hydroponic vegetables are safe, economical, and efficient, and they have achieved industrialization, standardization, and technology in agricultural production.
Recently, the reporter walked into the hydroponics vegetable base, and it was like entering a vegetable production workshop. I saw only a large greenhouse that was clean and tidy like a workshop, and the greenhouse was hard-bottomed. Even the bare soil was covered with a thin film. The height of the greenhouse is 8 meters high. There are shade nets, fans, and water sluice to cool down. In the future, professional agricultural air conditioners will be deployed. Even if it enters the greenhouse in summer, it will not feel hot. In the greenhouse, white pipes line up and round, and a circular hole is drilled at a certain distance from the pipe. A vegetable is planted in each hole (see photo by Chen Xiaojie). The pipeline has a certain slope, and the water flows slowly from high to low to provide nutrition for the growth of vegetables. It is understood that these waters are not ordinary waters. They are the water that has been added to the nutrients needed by vegetables after they have been precipitated and filtered. The fertilizer water is pumped into the pipeline through a water pump, and the slope of the pipeline is used to automatically flow and then flow into the pool to supplement the nutrients, thus providing a constant source of nutrition for the vegetables. The water supply system is automatically controlled by the computer. According to the characteristics of the vegetables, intermittent water supply is adopted. Most vegetables supply water for 10 minutes and stop for 5 minutes. This not only ensures that the root system does not break away from the water, but also prevents the roots from prolonged contact with water rot. Adequate combination of time is conducive to the growth of vegetables.
Compared with traditional soil cultivation, hydroponic vegetables have the advantages of safety, economy, and efficiency. The safety is reflected in the fact that hydroponic vegetable roots are not in contact with the soil, which insulates the soil from diseases, insect pests, and excessive exposure of heavy metals. The planted substrate is disinfected by high temperature and high pressure and it is not easy to get sick; greenhouses have pest control nets, sticky board, pest control lamps. 3 pest control points, do not use pesticides throughout the growth process. Saving is reflected in three aspects: saving water, saving land, and saving labor. Hydroponic cultivation does not require any soil and can make full use of the land. Apart from being absorbed by vegetables, the water is continuously recycled and the water consumption is one-tenth that of traditional soil cultivation; in the process of planting, there is no need for artificial grasses or pesticides. Watering, sowing is also the sowing of the machine, which requires only manual food collection. Usually, a worker can manage 60-80 mu of land. High-efficiency is reflected in the ability to plant 150-1600,000 vegetables per acre. Generally, it can be harvested in 20 days. It can be planted without climate and weather. It can plant 14-15 seasons per acre per year, and can produce 30-60 tons of vegetables per year. The taste of the grown vegetables is good, the value is more than 1 times that of ordinary vegetables, and the output value can reach more than 10 times that of traditional soil cultivation.
According to Cheng Decheng, although the hydroponic cultivation techniques they used were imported from abroad, they improved by about 70%. "All copying does not meet the domestic climate and the actual situation, and the cost is high." Cheng Decheng said that now the base is a large shed of 18 acres, about 350,000 yuan investment, the entire base covers an area of ​​400 acres and invested more than 1 billion. Their goal is to build the base into an urban agricultural park that integrates production demonstration, popular science propaganda and leisure tourism. At present, they are constructing an urban agriculture display area near the Asian Games Avenue in the base and displaying the famous agricultural products of Panyu in a centralized manner. The citizens can directly appreciate, taste, and purchase famous agricultural products of Panyu to create a never-ending agricultural exhibition trade. center. -->
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