冬小麦根系对土壤抗侵蚀能力的影响

土壤的抗侵蚀能力包括土壤的抗冲性和抗蚀性。根系的固结缠绕对土壤的抗侵蚀能力具有显著的影响。以不同含量的冬小麦根系的土样为研究对象，采用静水崩解法和抗冲槽法测定其抗冲性和抗蚀性。结果表明：根系能够降低土壤的崩解速率，即随着根系含量的增加，土壤崩解率缓慢降低。研究结果显示：土壤崩解过程可以分为吸水崩解阶段、快速崩解阶段、稳定崩解阶段3个阶段，随根密度增加，根系作用延长了土壤吸水崩解和快速崩解阶段，降低了土壤崩解速度。土壤抗冲刷系数随着根重密度的增加呈递增的二次函数关系。

The effect of the wheat roots to the soil erosion resistance

The soil erosion resistance includes soil anti-scourability and anti-erodibility. The consolidation and winding of roots have a significant impact on soil erosion resistance. In this paper, we study the anti-scourability and anti-erodibility of soil samples of winter wheat roots in different levels using the hydrostatic disintegration method and the soil bins method. The results showed that: the roots can decrease the soil disintegration rate, it is slowly decreasing as the increasing of the roots. The process of the disintegration can be divided into absorbent disintegration stage, rapid disintegration and steady disintegration stage. The absorbent disintegration and rapid disintegration has become long as the increase of roots density. It showed a increments quadratic function relationship between the soil anti-scourability coefficient and root weight density.