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What can a master of soil science do?
At present, the national soil pollution prevention and control work is under way, which is more conducive to the employment of soil students with rich professional ability. The state's investment in funds has also made enterprises and other institutions increasingly demanding the recruitment of talents in soil science, and the employment prospects of graduate students in soil science are also optimistic.
Soil science is one of the basic disciplines of agricultural science. It takes the loose layer on the earth's land surface where green plants can grow as the object, and studies the law of material movement and its relationship with the environment. The main research contents include soil composition; Physical, chemical and biological characteristics of soil; Occurrence and evolution of soil.
Classification and distribution of soil; Soil fertility characteristics, soil development, utilization, improvement and protection, etc. Its purpose is to provide theoretical basis and scientific methods for rational utilization of soil resources, elimination of low-yield factors, prevention of soil degradation and improvement of soil fertility level.
The development history of soil science;
1, origin
The rise and development of pedology is closely related to the development of modern natural sciences, especially chemistry and biology. /kloc-Before the 6th century, people's understanding of soil was only based on some intuitive properties of soil and agricultural production experience. For example, in the Warring States period, China classified soils according to the soil color, soil particle thickness and hydrological conditions of Shangshu Gong Yu, and then many agronomists discussed that more manure fields and deep ploughing and hoeing could improve soil fertility.
2. Development
From 16 to 18 century, with the vigorous development of natural science, modern pedology began to breed and sprout. In western Europe, many scholars put forward various hypotheses to demonstrate the relationship between soil and plants. /kloc-In the middle of the 7th century, Helmont thought that the soil only played an auxiliary role besides providing water for plants, according to his five-year experiment results of soil culture of willow branches.
At the end of 17, Woodward planted plants in rain, river, sewage and sewage plus humus, and found that plants in the latter two media grew better, so he thought that fine soil was the "factor" for plant growth, thus denying Helmont's view.
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