Refers to materials added to the soil to improve the physical and/or chemical properties of the soil, and/or its biological activity. According to different functions, it can be divided into: agglomerated dispersed soil particles, soil cementing agent for improving soil structure; soil stabilizer for fixing topsoil and preventing soil erosion; soil acid regulating agent for adjusting soil pH; soil warming for increasing soil temperature a soil water retaining agent that maintains soil moisture. China has a large area of ​​low-yield fields and adverse soils. In recent years, due to improper application of chemical fertilizers, the input of organic fertilizer has decreased, and many farmland traits have deteriorated, and soil fertility has shown a downward trend. In this case, in addition to improving soil fertility through rational fertilization and tillage, the scientific use of soil conditioners is also an effective measure. It can improve soil and improve soil fertility. Although it does not directly provide nutrients to crops, it provides favorable conditions for improving plant nutrition. The selection of conditioning agents mainly depends on the soil improvement target of the conditioning agent, the soil improvement effect and the material characteristics. Specifically consider the following aspects: The material characteristics of the conditioner. In the case of natural resource conditioners, the application rate can be larger and the range of suitable dosages is wider; while synthetic conditioning agents are much less expensive due to higher potency and cost. For example, weathered coal is added with appropriate amount of ammonia water or with ammonium bicarbonate heap rot for fertilization to change soil, the application rate per acre is 30-100kg, which can be applied to the soil or ditch and hole application after application; polyacrylamide to increase soil The agglomerate structure is the main purpose, and the suitable dosage is generally 1.33 to 13.3 kg. It can be sprayed on the surface or dry in the topsoil, and mixed with a disc. It should be noted that the amount of conditioning agent is not effective, and the cost is increased, and the opposite effect may be obtained. Conditioning conditions of the conditioning agent. Soil conditions have a great influence on the application effect of the conditioning agent. Soil moisture affects the uniformity of conditioning agent dispersion, soil water content is too high, ploughing is poor, field operation is difficult, and it is difficult to mix evenly; soil texture affects the agglomeration of conditioning agent on soil, and clay has better agglomeration effect than sand. The high content of organic matter is better than the low content. Buying or applying soil conditioners should not only consider the need to change the soil, but also consider economic conditions and do what you can. First, make full use of cheap natural resources such as peat/stalks and minerals such as lime and gypsum. However, the amount of organic materials and natural minerals is relatively large, and it should be developed nearby and applied nearby. How to face new products. In recent years, new soil conditioner products have been introduced. Before buying, you should carefully understand the true and false products and characteristics of the products. Carefully follow the instructions in the instructions. PU Caster Wheels, PU Caster Wheel QINGDAO HYTANG HAND TRUCK CO.,LTD. , http://www.cnwheelbarrow.com