The development of agricultural production in Xia Dynasty? With the development of agricultural production and the division of labor of production departments in Xia Dynasty,
Various handicrafts, such as firing pottery, sharpening stone tools, making bone mussels, smelting and casting bronzes, and making wood products, have also made new development and division of labor.
In the aspect of firing pottery, not only the fast wheel manufacturing technology was widely used at that time,
Moreover, in the firing method, the water application method before the pottery comes out of the kiln is often used.
What are the main characteristics of agricultural production? Agriculture is a material production department that uses the growth and reproduction of animals and plants to obtain products. Generally depends on the land. Agricultural production is a material production process in which natural reproduction and economic reproduction are closely combined.
I want to ask where Yi Kai is made. Wuhu City, Anhui Province
What are the main hazards of saline-alkali land to agricultural production? What kind of alkaline soil is in drought, salt frost or salt crust? 100g When the soluble salt content in the soil is 0, the soil salinization or alkalization is heavy (strong) and evaporation is strong. Depending on the salt content, the lower limit index of chloride is 0, the terrain is low and the salt content is greater than 0. Below the above-mentioned lower limit index of salt content, it is classified as mild, while its salt content is greater than 0, and the lower limit index of chloride and sulfate mixed saline soil is about 1%, which is called alkaline earth. In the case that there is white or gray salt crust on the surface of typical saline soil profile and the groundwater level is higher than 0.5 mg equivalent, the salt content in the surface layer is less than 0.5% according to the degree of harm to plants. The lower limit index of salt content on the surface of saline soil is greater than 9, and that of sulfate soil with more gypsum is about 2%. 6%, belonging to soda saline soil. It is formed when the exchangeable sodium in the soil alkalization layer accounts for more than 20% of the total exchangeable cations (alkalization degree), or the alkalization degree is more than 5%, resulting in the accumulation of excessive soluble salts in the soil surface or soil. Saline soil is generally alkaline (some coastal acid sulfate saline soil is acidified), the soil is strongly alkaline and the base is saturated. When the content of humus is low, the pH value is above 9, which is medium.
Significance of developing pollution-free agricultural production 1, social benefits;
The construction of pollution-free vegetable industrialization base has greatly improved the comprehensive agricultural production capacity, the ability to resist natural disasters and the level of vegetable industrialization through the installation of frequency vibration insecticidal lamps, special cement vegetable greenhouses, infrastructure construction of alpine vegetable bases, the popularization and application of standardized production technologies, and the establishment and improvement of four vegetable professional associations. On this basis, farmers built their own vegetable greenhouses 1000, which laid a good foundation for the development of vegetable industry in our county.
The application of frequency vibration insecticidal lamp and insect net can greatly reduce the use of pesticides and provide a strong guarantee for the quality and safety of agricultural products; Compared with the same period last year, the qualified rate of pesticide residue detection in vegetables increased by 2.8%, reaching 98.3%.
Vegetable industry is a labor-intensive industry. Its large-scale development has absorbed a large number of labor, promoted the development of secondary and tertiary industries, and emerged a large number of processing and sales personnel.
2. Ecological benefits:
After the completion of the project, standardized production technology will be promoted to organize production, physical methods and biotechnology will be adopted, pests and diseases will be controlled in a large area through safer and more effective pest control means, and the number of pest control times and pesticide consumption will be significantly reduced, and the consumption of vegetables will be reduced by 3-5 times on average every season, especially in combination with the promotion of new pesticides with high efficiency, low toxicity and low residue and the implementation of comprehensive control measures to eliminate the use of pesticides with high toxicity and high residue; Popularizing the application of organic fertilizer and reducing the amount of chemical fertilizer can effectively improve the agricultural ecological environment, improve the quality of agricultural products, further ensure the quality and safety of agricultural products, and promote the sustainable development of agriculture.
The significance of professional farmers to the development of agricultural production is discussed. 1. Cultivating new professional farmers is an urgent need to ensure national food security and effective supply of important agricultural products. With the increase of the total population, the increase of the proportion of urban population, the improvement of residents' consumption level and the expansion of industrial use of agricultural products, the demand for agricultural products in China has increased rigidly. Only by speeding up the training of a new generation of professional farmers and mobilizing their enthusiasm for production can we improve the overall quality of farmers, solve agricultural problems well and effectively guarantee food security.
? Second, cultivating new professional farmers is an urgent need to promote the transformation and upgrading of modern agriculture. At present, China is in a critical period of transforming traditional agriculture and developing modern agriculture. The mode of agricultural production and management is changing from a single farmer who is mainly engaged in planting and manual labor to diversification of subjects, broadening of fields, and extensive use of agricultural machinery and modern science and technology. Modern agriculture has developed into an industrial system with highly integrated primary, secondary and tertiary industries. There are no talents to support the development of modern agriculture, and farmers' scientific and technological level is not high. Many farmers can't use advanced agricultural technologies and production tools, and their ability to accept new technologies and knowledge is not strong. Only by cultivating a large number of new professional farmers with strong market awareness, knowledge of management, management and technology can modern agriculture develop. ?
? Thirdly, cultivating new professional farmers is an urgent need to build a new agricultural management system. Since the reform and opening up, the number of rural labor force in China has been decreasing, and the problem of structural decline in quality has become increasingly prominent. Mainly women and middle-aged and elderly people, the proportion of primary school education and below exceeds 50%. More than 60% of the new generation of migrant workers are unwilling to return to their hometowns to farm. In the future, "who will plant the land" will become a major and urgent issue. The key to ensure the "successor" of agricultural development is to build a new agricultural management system and develop new agricultural management entities such as large professional households, family farms, farmers' cooperatives, leading industrialized enterprises and agricultural socialized service organizations. Taking the cultivation of new professional farmers as a long-term and fundamental event, through technical training and policy support, we will retain a group of high-quality young and middle-aged farmers to engage in agriculture and continuously enhance the vitality of agricultural and rural development.
During the Sui Dynasty, who was the emperor who attached importance to the development of agricultural production? First, during the Sui Dynasty, Emperor Wen of Sui Dynasty attached great importance to the development of agricultural production.
Second, the rule of opening the emperor
The reign of Emperor Wendi of the Sui Dynasty began in the reign of Emperor Wendi. At that time, people's livelihood was rich, people lived and worked in peace and contentment, and politics was stable. Emperor Wendi advocated frugality, saved a lot of expenses, abolished unnecessary miscellaneous taxes and set up granaries to store grain. Emperor Wendi of Sui Dynasty successfully unified China after hundreds of years of serious division, and China maintained his political unity for most centuries.
Economically, it imitates the land equalization system of the Northern Wei Dynasty and implements the land equalization system. Dingnan divides 80 mu of land and Yongtian 20 mu. Women are divided into 40 acres. And tax relief, light tax, and the same interest with the people. If Ding is changed to 2 1 year-old, Shoutian will still be 18 year-old, and three years of service will be lost. It is also changed from 30 days to 20 days a year, and a silk horse (four feet) is reduced to two feet. In addition, Emperor Wendi ordered the reorganization of household registration, with five as the guarantee, five as the Lu and four as the clan. In the early days of the emperor's rule, there were more than 3.6 million households, rising from 500,000 to 8.7 million. In order to prepare for a rainy day, warehouses are widely set up, which are divided into official warehouses and voluntary warehouses.
The official warehouse is used for grain transportation and storage, while the warehouse is used for relief. Wendi is also committed to construction, building a new capital and a big city in the southeast of Chang 'an. Dig a wide channel to lead Wei Shui from Daxing to Tongguan, which is convenient for water transportation in Kanto. In terms of academic culture, Emperor Wen strongly advocated culture and education and extensively searched for books. In view of the long-term war and the loss of official books, he sent a letter to Tianxia Book and presented a book. After a year or two, the books were ready and sorted out, with more than 30 thousand volumes. In order to recruit talented people, Wendi set up a class of borrowing soil and a class of scholar, which created the imperial examination system in later generations and promoted the development of education and literature. In order to enlighten the whole country and restore the orthodoxy of Chinese culture, Emperor Wendi issued decrees, formulated rituals and music, and improved the cultural quality of the whole country.
What are the main modes to promote the rapid development of agricultural production in agricultural history? 1 dig water for irrigation.
2 hybridization technology
3 Agricultural machinery
The advantages of Tangji agricultural production mainly include Tangji model, which is a traditional low-lying land utilization model that farmers in the Pearl River Delta began to use more than 600 years ago. After farmers dig ponds and lift fields to form foundation ponds, they plant mulberry on the foundation ponds to raise silkworms, put silkworm excrement into fish ponds to raise fish, and return pond mud to the fields to fertilize mulberries. "Silkworms can make fish fat." This is the traditional Sanji fish pond.
The foundation pond model adapts to the environmental change of labor force to industry, and changes from labor-intensive production to low labor-intensive production. Adapt to the changes in the price environment and change from low-value products to high-value products. Adapt to the improvement of traffic conditions and the needs of urbanization development, change from transportable and storable products to fresh products. Adapt to the conditions of strengthening farmers' investment ability, gradually increase commercial investment and increase commodity output at the same time. To meet the market demand for products, the ratio of base surface to pool surface has changed. However, the foundation pond model has always maintained the basic characteristics of making full use of the rich water resources in tropical and subtropical monsoon regions, combining planting and breeding, reducing soil erosion and returning pond mud to the field. The foundation pond model can adapt to the environment.