摘要
为油茶林地在春季的科学施肥提供指导,以江西省20个县的油茶成林叶片为研究对象,运用DRIS指数法,对油茶叶片在3月份的9种养分(N、P、K、Ca、Mg、Cu、Zn、Fe、Mn)进行营养诊断。结果表明:萌芽前期江西油茶林N、P、K、Ca、Mn相对缺乏,Fe、Mg、Cu、Zn相对充足,萌芽前期油茶树体需肥顺序从高到低依次为:N>Mn>P>Ca>K>Cu>Zn>Fe>Mg。利用高产组叶片养分浓度制定了相应的养分诊断标准,即各养分的适宜浓度范围为N:12.351~17.837 g·kg^(-1)、P:0.467~1.015 g·kg^(-1)、K:4.511~6.864 g·kg^(-1)、Ca:5.981~10.612 g·kg^(-1)、Mg:0.836~1.940 g·kg^(-1)、Cu:1.231~2.405 mg·kg^(-1)、Zn:16.206~27.619 mg·kg^(-1)、Fe:0.154~0.475 g·kg^(-1)、Mn:1.947~4.626 g·kg^(-1)。
In order to guide scientific fertilization of Camellia oleifera forest in spring, using leaves of mature C. oleifera forest in 20 counties of Jiangxi Province as research objects, nine nutrient elements （N, P, K, Ca, Mg, Cu, Zn, Fe and Mn） were analyzed by using the DRIS index method. The results showed that N, P, K, Ca and Mn in C. oleifera forest were relatively insufficient, and Fe, Mg, Cu and Zn were relatively sufficient at early bud gemination stage. The order of required fertilizer from high to low was N, Mn, P, Ca, K, Cu, Zn, Fe, Mg. According to nutrient concentration in leaves of high-yield group, the corresponding nutrient diagnostic standard were established, and the suitable concentration ranges of N, P, K, Ca, Mg, Cu, Zn, Fe and Mn were 12.351-17.837 g·kg - 1, 0.467-1.015 g·kg - 1, 4.511-6.864 g·kg - 1, 5.981-10.612 g·kg- 1, 0.836-1.940 g·kg - 1, 1.231-2.405 mg·kg - 1, 16.206-27.619 mg·kg- 1 0.154-0.475g·kg - 1, 1.947-4.626 g·kg - 1, respectively.
出处
《经济林研究》
北大核心
2017年第4期192-196,共5页
Non-wood Forest Research
基金
江西省科技支撑项目"油茶高效液态肥的研究"(20141BBF60049)
赣鄱英才555工程项目"油茶良种创新与应用"
关键词
油茶
DRIS
营养诊断
江西省
Camellia oleifera
DRIS
nutrient diagnosis
Jiangxi Province
