Are such issues only because of your cylindrical grinding machine? Center Hole Grinding Machine Center Hole,Center Hole Grinding Machine,Center Hole Grinder,Center Hole Grinding Xinxiang Sunrise CNC Bearing Equipment Co., Ltd. , http://www.cncsunrise.com
The determination of soil nutrients in greenhouses through the soil nutrient fastness meter can summarize the problems.
1) Continuous cropping. Due to the large limitation of production in most protected areas, the single planted crops, together with the annual cultivation, caused continuous cropping damage to be very serious. Concentrated performance is: increased soil-borne pathogens, increased soil pests, lack of nutrients, and imbalanced proportions. As various vegetables have specific requirements for nutrients, the selective absorption of nutrients leads to the overabsence of some nutrients, especially trace elements, resulting in various kinds of nutrient deficiency syndromes.
2) Some nutrients appear to be enriched. Most greenhouses have phosphorus and potassium nutrient enrichment.
3) Severe soil salinization and acidification. Due to the large number of chemical fertilizers applied year after year, and there is little chance of being washed away by rainwater leaching, the salt concentration in the soil of the cultivating layer is gradually increased, and the main salts are calcium, potassium, nitrate, and sulfate. In addition, high temperature and evapotranspiration in greenhouses make it easy to bring salts contained in soil to the surface, causing excessive concentration of salt in the soil, impairing crop roots and hindering the absorption of nutrients by roots. Old sheds are prone to salt damage. The remaining nitrogen is absorbed by the crop, which is relatively low in leaching loss in the open field, but remains in the soil in the greenhouse. Over time, accumulation of nitrate results in acidification of the soil and is not conducive to vegetable growth.
After the soil nutrient fastness tester measures the relevant nutrients in the greenhouse soil, in order to be able to improve this situation and increase the soil fertility, it is necessary to reasonably balance the fertilization in the production process. Need to "measure, match, produce, supply, apply" as a whole, according to the soil nutrient content and fertilizer requirements for the development of fertilization plans, generally based on the analysis of soil analysis, according to the crop needs fertilizer characteristics to achieve what is missing in the soil The lack of much supplementation not only avoids the waste caused by more and more fertilization, but also prevents the occurrence of single nutrient-caused deficiency and physiological diseases.
Causes of geometry faults such as improper circularity and cylindricity as well as surface roughness could be the insufficient machine precision or the balance of grinding stones. However, in many cases, all those issues may be caused by the accuracy of the "Center Hole".
If you feel something should be improved, please first check the accuracy of the center hole. Not only can the causes of accuracy failure be because of center hole, but the "Centering machine" and "Center Hole Grinding Machine" can be the causes, too.
"2M8015" created by a highly precise Machining Center manufacturing technique
XINXIANG SUNRISE's machining center, well known for its excellent precision and long lifetime, is highly appreciated by world-class machine manufacturers. And "2M8015", SUNRISE's Center Hole Grinding machine, is developed by utilizing SUNRISE's designing philosophy and essences of the manufacturing technique.
2M8015 is a precise center hole grinding machine capable of grinding both center holes accurately without turning the work pieces. Delivery of 2M8015 into the market made a step forward to the future potential of extra precision cylindrical grinding machines.
The accuracy of the center hole influences that of cylindrical grinding greatly. The grinding motion of the unique grinding stone of 2M8015 is capable of grinding the center hole into the super-accurate polygonal shape with a deviation of 2μm or less, and this can only be realized by the cutting edge technology of SUNRISE. The center hole, which is polygonal-shaped based on the three-point support principle, is in contact with the spindle stock of the cylindrical grinding machine and the center of tailstock at three points precisely and securely. This makes possible the further higher grinding accuracy using your currently available cylindrical grinding machines.
The Effect of Soil Nutrient Analyzer on Soil Condition Improvement in Greenhouse
Greenhouse planting technology provides a strong guarantee for agricultural production. However, due to the differences in the environment in which the soil in the greenhouse is located, there is a big difference in nutrients and physical and chemical properties from open soil. The soil nutrient quick-analysis instrument was used to sample and analyze the greenhouse soil. It was found that the soil nutrients in the greenhouse were generally higher, and the old shed had more nutrients than the new shed. Overall, the balanced fertilization effect of the soil in the greenhouse was poor. The application of fertilizers is basically chemical fertilizers that exacerbate the production of soil.