覆盖模式

Mulching management

处理方法

Treatment method

地布覆盖

Cloth mulching

沿树行方向开沟施肥后回填到低于地面5 cm左右，两侧施肥沟上覆盖1.2 m宽地布，形成两边高、 中间低V字型，分段挡土、扎眼以促进降水下渗。

After ditching and fertilizing along the tree line, backfill to about 5 cm below the ground, ditch 1.2 m wide cloth on both sides of the fertilization area, form a V-shape with high on both sides and low in the middle, block soil and prick cloth to keep rainfall infiltration.

秸秆覆盖

Straw mulching

同上开沟施肥后回填，树盘覆盖宽度1.2 m、厚度15 cm的碎秸秆。

Backfilling after ditching and fertilization, mulching straw with width of 1.2 m and thickness of 15 cm.

地膜覆盖

Plastic film mulching

覆盖1.2 m宽黑色地膜，其余同地布覆盖。

Mulching plastic film, the others were the same with polypropylene film mulching.

清耕对照

Control

开沟施肥后回填，不覆盖。

Backfilling after ditching and fertilization, without covering.