基于DRIS法的短枝木麻黄苗期综合营养诊断

叶功富; 高伟; 杜林梅; 卢昌义; 罗美娟

doi:10.3724/SP.J.1142.2013.20136

基于DRIS法的短枝木麻黄苗期综合营养诊断

1.
福建省林业科学研究院, 福州 350012
2. 江苏省句容中等专业学校, 江苏镇江 212400
3. 厦门大学海洋与环境学院, 厦门 361000

基金项目: 国家自然科学基金项目"海陆交界带的土地利用变化对典型植被碳吸存影响的宏微观尺度研究"(41176092); "十一五"科技支撑计划"南亚热带防台风防护林体系研究与示范"(2009BADB2B0302);国家林业局南方山地用材林培育重点实验室、福建省森林培育与林产品加工利用重点实验室资助项目。

详细信息

作者简介:
叶功富(1966-),男,博士,教授级高工,研究方向为沿海防护林生态管理。

通讯作者:
高伟, E-mail: gao01271@163.com

中图分类号: Q948; S725.5; S792.93
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出版历程
- 收稿日期: 2012-06-14
- 修回日期: 2012-11-04
- 发布日期: 2013-04-29

Nutrient Diagnosis of Casuarina equisetifolia Seedlings Using DRIS

1.
Fujian Academy of Forestry, Fuzhou 350012, China
2. Jurong Secondary Specialized School, Zhenjiang,Jiangsu 212400, China
3. College of Oceanography and Environmental Science of Xiamen University, Xiamen 361006, China

摘要

摘要: 以我国东南沿海沙地主要造林树种短枝木麻黄(Casuarina equisetifolia)一年生苗木为研究对象,应用氮(N)、磷(P)、钾(K)三元二次旋转回归法,根据现实生物量的差异,划分为2种不同的产量类型,同时结合室内养分含量分析,以高产量类型为最适值,制定了诊断施肥综合法(Diagnosis and Recommendation Integrate System,简称DRIS)及指数法的营养诊断标准,研究氮、磷、钾不同施肥配比条件下苗木体内氮、磷、钾的养分含量及其需求程度,对短枝木麻黄进行苗期综合营养诊断分析。结果表明:施肥配比对短枝木麻黄苗木生物量积累规律有较大影响,苗木生物量最优解为19.84 g/株,对应的最佳施肥方案为氮、磷、钾分别施肥0.329 g/株、 2.298 g/株、 0.154 g/株。短枝木麻黄苗期小枝3种元素浓度的最佳比值范围为P/N=0.3174±0.1302; K/N=1.1010±0.506; K/P=3.5564±0.5075,以生长末期12月份各处理苗木为例,列出各元素的DRIS诊断指数及相对需肥次序,证实了营养诊断的准确性。
- 短枝木麻黄 /
- 苗木 /
- 营养诊断 /
- 诊断施肥综合法
Abstract: Using one-year-old Casuarina equisetifolia seedlings,which are the main planting species along the sandy coast of southeast China,and ternary quadratic rotary recursive fertilizer design of N,P and K,two different output types were divided based on real differences in biomass.Further,by the data of N,P and K nutrient elements contents of the seedlings,nutrition diagnosis was analyzed for C.equisetifolia.There was an obvious impact of proportioning fertilization on biomass accumulation of C.equisetifolia.The optimal solution of seedling outputs was 19.84 g per tree,and the respective quantities of fertilization were 0.329 g per tree for N,2.298 g per tree for P,and 0.154 g per tree for K.The rational scales of ratios among the nutrient elements were P/N=0.3174±0.1302, K/N=1.1010±0.506, K/P=3.5564±0.5075.Application of examples treated by ternary quadratic rotary recursive fertilizer design confirmed the diagnosing accuracy and list sequence of nutrients demanded through DRIS(Diagnosis and Recommendation Integrate System).
- Casuarina equisetifolia /
- Seedling /
- Nutrient diagnosis /
- DRIS

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