银中杨生长和生长规律

The Growth Law of Populus clba× P. berolinensis

对银中杨生长的研究表明。银中杨在生长方面远远超过当地推广树种小黑杨，其中材积生长超过小黑杨７３．４％～２６９．２％；在本地区生长超过目前东北、内蒙及华北地区的优良杨树品种、同时探讨了银中杨生长规律及适宜栽植密度．并将银中杨生长划分５个生长时期，为合理经营银中杨提供科学依据。

The study on the growth of Populus alba × P. berolinensis shows that Populus alba x P. berolinensis is much better than the local popularizing species Populus xiaohei. that is a fast-growing and greening superior Poplar hybrid. it's volume growth exceeds Populus xiaohei by 73. 4% - 269. 2%. The growth law and suitable planting density of P. alba x P. berolinensis was discussed. and five growth stages for Populus alba × P. berolinensis was also divided.