论文部分内容阅读
雨季温度高、湿度大、墒情好,是荒山造林的主要季节,现对雨季造林技术及管理要点总结如下:一、合理整地山坡上部及25°坡以上的地段,一般采用穴径30~40厘米左右,深30~40厘米的穴状或长径50~60厘米,短径30~40厘米,深20~40厘米,土堰高10~20厘米的鱼鳞坑整地。山坡中部及15°~25°坡的地方,采用鱼鳞坑或水平阶整地。鱼鳞坑规格同上,水平阶宽1~1.5米,长以便于整平田面为宜,深30~80厘米。山坡下部及15°坡以下的地段,采用窄幅梯田整地,梯田宽2~5米,长度随山坡情况而定,深50~80厘米,垒坚固的石堰,两阶之间保留
Rainy season is high temperature, humidity, moisture is good, is the main season of afforestation of barren hills, the afforestation technology and management are summarized as follows: First, a reasonable slope and the upper part of the slope above 25 ° slope, the general use of 30-40 cm in diameter About 30-40 cm deep hole or long diameter of 50 to 60 cm, short diameter of 30 to 40 cm, 20 to 40 cm deep, weir high 10 to 20 cm fish scale pit site preparation. Central hillside and 15 ° ~ 25 ° slope, the use of fish scale pit or leveling. Scale fish pit above, the level of 1 to 1.5 meters wide, long in order to flatten the field is appropriate, deep 30 to 80 cm. The lower part of the hillside and below the 15 ° slope, the use of narrow terraces site preparation, terraced 2 to 5 meters wide, depending on the slope of the length of 50 to 80 cm, barrier solid stone weir, reserved between the two