【摘要】 通过对黑杨派 3个无性系I 6 3,I 6 9,I 72杨进行苗木自然失水试验 ,找出了苗木离土后的失水速度和失水量。采取相应的技术保护措施 ,可提高杨树造林成活率。更多还原

【Abstract】 The speed and the quantity of loss of moisture were determined under the natural state of the 3 clones, I 69,I 63 and I 72,which be long to Sect.Aigeiros Duby from soil. The survival rate of poplar afforestation would be raised by employing some protective measures. Authors’ address:Siyang County Forestry Centre, Jiangsu Siyang 223700 China更多还原