全文总字数：2042字

1. 毕业设计（论文）的内容、要求、设计方案、规划等

（1）前言：林木生理，指的是反应林木生理活动的指标，如叶片气孔开度，茎流等。

主要反应植物生理活动受气候和病虫害的影响而发生的变化，其变化程度，可作为判断作物是否发生病虫害的依据。

气孔是植物叶片与外界进行气体交换的主要通道。

2. 参考文献（不低于12篇）

1. Bov, J. M. (2006). Huanglongbing: A destructive, newly emerging, century old disease of citrus. Journal of Plant Pathology, 88(1), 737.2. Shokrollah, H., Abdullah, T. L., Sijam, K., o Paulo, Brazil. European Journal of Plant Pathology, 130(4): 577－586.4. Liao, H., o Paulo State. International Association of Agricultural Economists Triennial Conference. IAAE Publications, Foz do Iguau, Brazil.9. Hong, T., Zhang, Y., Song, S. (2014). Research and application of mountainous orchard transportationand spray machinery. Modern Agricultural Equipment, 5, 2127.10. Fan, G., Liu, B., Wu, R., LI, T., Cai, Z., Ke, C. (2009). Thirty years of research on citrus Huanglongbing in China. Fujiau Journal of Agricultural Sciences, 24(2), 183190.11. Lo, X. (1983). Studies on the sterilieation effect of the intermittent hot water treatment on citrus budwood and nursling infected with citrus yellow shoot. Journal of South China Agricultural University, 4(1), 97103.12. Lin, K., Zheng, R. (1964). A preliminary study on the resistance of yellow shoot virus and citrus budwood tissue to heat. Acta Phytopathologica Sinica, 7(1), 6165.