摘要
Abstract
[Objective] The research aimed to study the introduction trial on new varieties of Salix Integra and its growth laws. [Method] This research chose and introduced 4 fine varieties. JW9-6 and JW8-26 were the fine clones chosen from the crossbreed of Salix suchowensis and Salix integra by Jiangsu Institute of Forest Science. Cryptomeria fortunei and Salix integra had been selectively cultivated in Tancheng for many years. These 4 varieties were compared with other different varieties in woods of different densities, by means of complete randomized block and split plot design. The research contents included the survival ratio of cuttage, phenophase, fastness, ground diameter growth laws and plant height growth laws. [Result] The introduction trial showed that 4 clones could outdoor overwinter and spend summer, and the economic value did not reduce comparing to origin place, so this trial was success. The study of ground diameter growth law of Salix integra showed that the rapid period of the ground diameter growth increment was from March 10th to May 10th, and the May 25th reached the peak value, then began to drop. The average ground diameter growth rate was in order: JW9-6 (26. 82%) > Cryptomeria fortunei (22. 85%) > JW8-26 (19. 33%) > Salix integra(17.25% ). The study of plant height growth law of Salix integra showed that the rapid growth period of the plant height growth increment was from March 10th to May 10th, and the May 25th reached the second peak value, and the average net added height was 47. 0 cm, then began to drop. The average plant height growth rate was in order: JW9-6(46.99% ) > Salix integra(44.24% ) > Cryptomeria fortunei (43.87%) > JW8-26(41.96%), but had no significance. [Conclusion] The study can provide a reference for cultivating these 4 varieties in low-lying belt and tidal flats in Zhumadian.关键词
杞柳/品种/引种试验/生长规律Key words
Salix integra/ Variety/ Introduction experiment/ Growth laws
分类
农业科技
