Abstract
In this paper, three typical soil types around the banks of the Grand Xi’an River are described. Lou soil, entisols and loessial soil were used as the research objects and the rice growing stages, including pre-treatment, tillering stage, jointing stage, heading stage and maturity stage, in paddy field construction were analyzed. The results showed that: In the field, the effects of Tillage in different types of soil layer ranging from 0 to 20 cm on soil nutrients are obvious, in which available phosphorus, nitrate nitrogen, ammonium nitrogen content decreased during the growth period and the content of available potassium in the overall appear to be rising. It was concluded that the jointing stage was the most prosperous period of rice growth, the potassium content in the region could meet the growth demand, and the amount of potassium fertilizer could be reduced in the coming year.
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