| Based on the determination of soil moisture of the apple field,apple～yellow ginger field and wheat field in Yaozhou of Tongchuan city,the change of soil moisture from 0 to 600 centimeter is studied.The result shows that the change of soil moisture of the apple field is from high to low,and the slight dried layer of soil is obviously formed between 200 and 400 centimeter.The soil moisture of apple～yellow ginger field contrast to the apple field,the soil moisture above 500 centimeter has recovered,dried layer has disappeared.The soil moisture below 500 centimeter has compensated,but not recovered thoroughly.It has not obviously change under the 100 centimeter of wheat field,and it's normal.In general,crop rotation is able to make soil moisture be recovered within certain range.At last,four measures have been put forward for recovery of the soil moisture. |