摘要
为分析氮、磷配比施肥对罗甸县油茶人工林生长及光合作用的影响,本研究于贵州省罗甸县某油茶人工林样地开展试验研究,根据氮磷肥质量比设置5个处理,CK(不施肥)、Z1(氮磷质量比为3:7)、Z2(氮磷质量比为4∶6)、Z3(氮磷质量比为5∶5)、Z4(氮磷质量比为6∶4)、Z5(氮磷质量比为7∶3),分析氮、磷配比施肥对油茶人工林生长及光合作用的影响。结果可知,Z4、Z5的油茶人工林其叶片、枝干、根系生物量显著高于CK处理(P<0.05);Z4处理油茶人工林年平均树高增长量和年平均冠幅增长量最高;Z4处理净光合速率、胞间CO_(2)浓度、蒸腾速率显著高于CK处理(P<0.05),气孔导度显著低于CK处理(P<0.05)。由此可知,Z4处理(氮磷配施比6∶4)的油茶人工林长势最佳,光合作用较为明显,其次是施Z5处理(氮磷配施比7∶3)。
In order to analyze the effects of nitrogen and phosphorus fertilization ratio on the growth and photosynthesis of oiltea plantation in Luodian County,Guizhou province,an experimental study was carried out in a oiltea plantation sample in Luodian County,Guizhou Province.Five treatments were set according to the mass ratio of nitrogen and phosphorus fertilizer.CK(no fertilization),Z1(N/P mass ratio 3∶7),Z2(N/P mass ratio 4∶6),Z3(N/P mass ratio 5∶5),Z4(N/P mass ratio 6∶4),Z5(N/P mass ratio 7∶3)were used to analyze the effects of N/P ratio on the growth and photosynthesis of Masson Pine plantation.The results showed that the leaf,branch and root biomass of Z4 and Z5 Masson pine plantations were significantly higher than those of CK treatment(P<0.05).Z4 treated camellia oleifera plantation had the highest annual average tree height increase and annual average canopy width increase.The net photosynthetic rate,intercellular CO_(2) concentration and transpiration rate of Z4 treatment were significantly higher than those of CK treatment(P<0.05),and stomatal conductance was significantly lower than that of CK treatment(P<0.05).In conclusion,Z4 treatment(N/P ratio 6∶4)of oil tea plantation in Luodian County had the best growth and photosynthesis,followed by Z5 treatment(N/P ratio 7∶3).
作者
谭世隆
TAN Shiong(Luodian County Forestry Bureau of Guizhou Province,Guizhou Qiannan Buyei and Miao Autonomous Prefecture,Luodian 550100,Guizhou,China)
出处
《林业科技情报》
2025年第3期150-152,共3页
Forestry Science and Technology Information
关键词
氮、磷肥
罗甸县
油茶人工林
生长指标
光合作用
Nitrogen、phosphate fertilizer
Luodian County
masson pine plantation
growth index
photosynthesis
