A few days ago, the Ministry of Agriculture dispatched the effect of determining the fertilization of early rice by soil testing. According to the investigation of 61,300,000 mu of early rice in 379 project counties in the 9 major rice producing provinces, the application effect of soil testing and formula fertilization was obvious.
Through soil testing and formula fertilization, the ratio of fertilizers was optimized and the fertilizer structure was improved. According to the survey statistics, in 2005, the amount of fertilizer used per mu was 22.9 kg in the core demonstration area of ​​early rice soil testing, and the application rates of nitrogen fertilizer, phosphate fertilizer, and potassium fertilizer were 10.7 kg, 5.0 kg, and 7.2 kg, respectively. Nitrogen, phosphorus, and potassium fertilizer formulations The proportion was optimally adjusted from 1:0.50:0.41 for conventional fertilization to 1:0.46:0.67.
Promote the increase in yields. Through the implementation of soil testing and formula fertilization, compared with conventional fertilization, the core demonstration area increased 42.4 kg per mu, an increase of 8.5%.
According to statistics, the amount of chemical fertilizer in the core demonstration area is 1.6 kg less than that in the conventional fertilizer area. Among them, the amount of nitrogen fertilizer is reduced by 2.1 kg, the amount of phosphorus fertilizer is reduced by 1.4 kg, and the amount of potassium fertilizer is increased by 1.9 kg.
In addition, through the implementation of soil testing and formula fertilization, the promotion of cost-effective agriculture and farmers income. Compared with the conventional fertilization area, the average core-earth demonstration area of ​​early rice soil testing and fertilization has an increase in efficiency of 60.0 yuan, of which the average increase in yield per mu is 54.0 yuan, and the increase in costs is 6. yuan.
Chinese Herbal Medicine (English name: Chinese herbal medicine): Chinese medicine is mainly composed of botanical medicine (root, stem, leaf, fruit), animal medicine (viscera, skin, bone, organs, etc.) and mineral medicine. Because botanical medicine accounts for the majority of Chinese medicine, Chinese medicine is also called Chinese herbal medicine.
There are about 5,000 kinds of Chinese medicines used in various parts of China, and there are countless prescriptions made by combining various medicinal materials. After thousands of years of research, an independent science, Materia Medica, has been formed. Various medical schools in China have set up the course of natural medicine, which is called the Chinese herbal medicine.
The concept of plant extracts can be accepted and recognized by various countries, and it is also a common expression used to spread herbal medicines in various countries. The export value of plant extracts in China exceeded the export value of Chinese patent medicines as early as 1999. In European and American countries, plant extracts and their products (plant medicines or food supplements) have a broad market prospect, and have developed into an emerging industry with annual sales of nearly 8 billion US dollars.
The plant extracts in China are generally intermediate products, which are widely used, mainly used as raw materials or auxiliary materials for medicines, health foods, tobacco, cosmetics, etc. There are also many kinds of raw material plants used for extraction, and there are more than 300 plant varieties that are extracted industrially.
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