Soil testing and fertilization technology has a very important role in the construction of high-yield, high-quality and high-efficiency agriculture. Soil testing is not only an agricultural production but also a widely used management technique in lawn science. With the development of our country’s economy and the improvement of people’s living standards, the demand for the environment has gradually increased. The lawn has rapidly developed as the main content of urban afforestation. By the end of 2000, there were already 350 million m2 of turfgrass for various uses across the country, and more than 100 high-quality golf courses had been built. How to fertilize the lawn scientifically not only affects the growth and development of the turfgrass, but also may affect the surrounding environment of the turf because green lawns are mostly located in cities or near cities. Irrational fertilization may cause environmental problems such as excessive nitrogen and phosphorus content in water bodies. . In order to promote the application of soil testing in turfgrass science, it is necessary to learn the experiences and research results that have matured abroad, and apply high-efficiency soil nutrient testing techniques to guide the rational application of lawn fertilization to improve the level of turfgrass management in China and promote the development of turfgrass science in China. . The soil nutrient analyzer is very accurate in determining the soil nutrient content. The application in these studies is very important.
Sampling and sample preparation must be carefully studied. If soil sampling and sample preparation for chemical analysis are not carefully performed or samples are not representative, soil test results may not be correct. In general, the sampling depth of crop field is 0~20cm, but the sampling depth of lawn soil is generally 0~10cm. If continuous nutritional status monitoring is performed, it is important to note that the sampling depth is the same each time, in order to compare the soil test results measured at different times. Sampling can be performed at any time during 1a, but be careful not to take samples within 2 weeks of fertilization. The sampling method is to sample multiple points (a minimum of 10 to 20 points of soil) in similar areas and carefully mix the soil samples into a soil sample to represent the sampling area. Note that the soil samples taken should be sufficient for all the items that need to be analyzed. If sampling a golf course, the green area and kick-off area should be taken separately. Fairways and other areas with different properties such as low tide, highlands and drainage areas should be sampled separately. Number the sample and carefully record the sampling area information. Generally, the lawn can be sampled once every 2~3a, unless you want to significantly change the soil chemical properties such as soil pH, phosphorus level, or salinity. In this case, you may need to take one sample every year. In addition, if the soil is high in pH or high in sodium and sulfur is being applied to lower the pH, the soil pH should be determined at least once every year in the 0 to 2.5 cm litchi layer soil.
The soil nutrient tester can play a role in the soil testing laboratory's recommended fertilization for turf soil testing. It is generally used throughout the year. Therefore, the fertilization should be based on the length of the local growing season, rainfall, temperature, soil and lawn. Types and turf management personnel's experience are assigned and adjusted. Soil testing laboratories must be combined with turfgrass management personnel in order to improve the soil fertility recommendation techniques. Rational fertilization on the lawn is based on understanding the status of soil nutrients. Formulating fertilization plans includes selecting suitable fertilizer types, fertilizer dosages, fertilization techniques, and fertilizing time. It is possible to achieve high quality due to comprehensive consideration of land, species, and time and place. The harmonization of the lawn and the protection of the ecological environment.
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