《Table 3 Changes in the contents of Mo, B, Se, Zn and Cu before and after the improvement of alkalin

  提示：宽带有限、当前游客访问压缩模式

本系列图表出处文件名：随高清版一同展现

《Functions of Russian Melilotus officinalis on Degraded Soil Improvement》

1. 获取 高清版本忘记账户？点击这里登录

1. 下载图表忘记账户？点击这里登录

The test data of soil samples before and after the test were divided into two parts:chemical composition and trace elements.After analysis and statistics，they were listed in Table 2&3.The test results showed that compared with the items before improvement，soil p H，alkalinity and total soluble salts of the improved soil decreased significantly，which decreased by 7.92%，33.99%and 23.07%，respectively，presenting significant desalination and dealkalization effects.The total amount of soil organic matter and hydrolysable Nincreased significantly，which increased by 5.91%and 11.93%after improvement，respectively，suggesting that soil organic nutrient composition increased.Soil total P and available K decreased significantly，which decreased by 14.29%and 35.95%，respectively after the improvement，and it was caused by the lower background value of P and K and the large absorption by M.officinalis.Mo，B，Se，Cu，and Zn in the soil decreased greatly，which was related to the low biological activity in alkaline medium and the need to absorb a large amount of trace elements during the growth process of M.officinalis.The results were confirmed by the subsequent special test results of increasing trace elements to increase grain yield[11-12].