Study On Spring Germination Mechanism Of Poa Pratensis L. In Hohhot

The blooming period of spring bluegrass in Hohhot is around April 1.The soil pH value at the test period of returning to the green period was 7.8,and the pH of the soil was alkaline.The contents of soil nutrients in the green returning period were widely affected by climatic conditions and growth and development of turf grass.The average content of soil organic matter in the return period is 15.81g/kg,and the dynamic range of available phosphorus content was relatively large,with an average content of 7.75 mg/kg.The average content of available potassium is 163.31mg/kg.Basic nitrogen dispersion is relatively large,with an average content of 261.62 mg/kg.The average contents of catalase and urease in soil were 1.605 mg/g and 0.285 mg/g,respectively.The formation and accumulation of chemical components of Poa pratensis L.is a dynamic process that is always affected by soil nutrients.In this paper,the relationship between soil nutrient changes and the dynamic changes of main chemical components in the turfgrass returning green period was analyzed using the grey correlation analysis method.The results showed that different soil nutrient factors had different effects on the growth of P.villosa plants.For example,in the determination of soluble sugar content in the plant,catalase,available phosphorus and organic matter are closely related to the growth of the plant nutrient factors.In the determination of soluble protein in Kentucky Bluegrass,available phosphorus,catalase and available potassium are important factors affecting protein content.Available potassium,catalase,and available phosphorus are nutrient substances that affect the proline content in the early maturing pods in spring.The various nutrient factors in the soil have essential influence and correlation on the turfgrass content in the spring returning stage.The accurate understanding of the interactive relationship of soil nutrient factors on the plant germination can provide more favorable conditions for the early return of green lawn in spring.Can also be targeted according to nutrient conditions to improve soil fertility.Based on the above findings,in the process of improving the turfgrass turning green in the region of Hohhot,the content of available phosphorus and available potassium in grass-planting soils should be appropriately adjusted,and the control factors for enzyme activity content in soil should be strengthened..Or it is an appropriate supplement to soil organic matter.