Soils Natural
(Natural ways for Soil Improvement)
the nature of the soil,
the soil is suitable for cultivation. Must contain treasure 3 reasons : 1. The chemical is soil must be balanced. Of plant nutrients Consisting of Nutrient primary nitrogen, phosphorus and potash potassium secondary nutrients include calcium, magnesium, sulfur, micronutrients including iron, zinc, copper, boron, molybdenum products, manganese and chlorine and soil pH neutral soil is not acidic to alkaline. or are too salty 2. Physical properties of the soil must be a balance of air and water, that is, the soil must be well structured to be incoherent, well ventilated, with the ability to absorb water well. Soil island loosely to allow the roots to spread and thread to plant nutrients more easily. In the wide and far, the ground was soft, not stiff 3. Biological properties of the soil balanced. Microbial ie, a soil with microorganisms, and a little life in the soil that are useful in large quantities, which can control microorganisms, and a little life in soil is attributed to the plant as well, and microbes. in soil can create events. The benefit to the plant as well as the sub-soil minerals that are beneficial to plants or provide little benefit to be beneficial to plants and increase the volume, the greater fixation of plant nutrients from the air is beneficial to the plant. Antibiotics suppress diseases and pests in the soil strengthen the power to destroy the toxins in the soil, plants and soil with the soil. The general dominant Most often, the lack of fertile complete. Soils with low fertility of the soil is poor and very dense structure does not absorb water has bacteria in the soil due to the condition. However, due to inappropriate use of the soil. For cultivation by continuing lack of updates. And maintenance Modi- Inappropriate land use, misuse , as well as the origin of the soil, such as clay, sand, gravel soils, saline soil, and so off balance. In the fields of chemical, physical and biological need to make improvements and solutions for the benefit of users. The next crop to recommend to you to the ground, a kind of problem in Thailand, and find a way to improve the re-use benefits. A survey of the development of land that soil resources of the country. A physical or quality. Which can be classified as follows : 1. Low soil fertility problems and deterioration of the soil survey and classification of the Department of Justice conducted in various. Of the Most soils with low fertility. Naturally , since Located In tropical temperatures and rainfall are the dissolution of the mineral soil parent materials is fast and. Wash plant nutrients out of the soil, the rate higher during the rainy season being swept away with the water that flows into the low to the rivers and the sea in the decomposition of rocks, minerals in the soil. runs very fast and this is the soil in most applications comprising clay mineral kaolinite (Kaolinite) iron ore and aluminum oxide (hydrous oxide clay) which mineral clay. They also have a role To absorb nutrients and turning positive charge low (low activity clay), so make plenty. Soil naturally low 2. Soil with special problems (problem soils) from the exploration and mapping of. Department of Justice found that certain kinds of soil physical and chemical properties as barriers or restrictions. For use in agriculture, especially the cultivation of crops. Need to be developed or revised. To enhance the production Those soil Soils with a special issue of this. Not excluded by the condition The following problems or limitations 2.1 soils. Or sulfuric acid (acid sulphate soils) , the ground was precious. Of acidity (pH) lower than 4.0 is the next layer from the surface down to (sud surface) and in the top containing yellow straw occurred (jarosite) value of PH may be as low as 3.5 or lower if. In such cases, the soil can not grow any more, even though rice is often neglected to empty the grass covered up. The plants can not grow rice or else just because. Substances such as iron and aluminum melt out is toxic to plants and also the elements necessary for the growth of plants, some insoluble benefits to plants, especially phosphorus being crucified (fixation) and stay in shape. that is beneficial to the plant so it is considered as a land. With special problems To improve and benefits. Of cultivated soils. Sulfuric acid or the We have an area of about 9.0 million hectares , or 2.81 percent of total land area is found in the central plateau, south -eastern and southern parts found scattered. Coastal areas In the area The water had flooded before 2.2 saline (saline and sodic soils) into the soil with salt soluble component is high and dangerous. The plants that grow in saline at most. In eastern North There are approximately 17 million acres, or 5.5 percent of the entire country. Also found in coastal saline soil. (Coastal SALINE soils) have a combined area of about 3 million hectares with saline in the Northeast. With an area of 20 million hectares, which salinity at these potentials. In some low-yielding crops can not grow at all. Especially the salt that is in the Northeast , with salt (salt crusts) appears at the surface during the dry season , which shows that saline soils. The salty seaside utilization of salt fruit by the groove so that the coconut and remaining mangrove cover is also some use in aquaculture installations such as shellfish and fish, etc. 2.3 soil. sand (sand
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