| 摘要: |
| 采用氮、磷、钾 3 因素 3 水平施肥正交试验，研究氮磷钾施肥配比对中华楠苗木生长的影响，为中华楠苗木培育提供理论基础。结果表明：（1）不同氮磷钾施肥配比对中华楠苗木各项指标均存在显著影响。223 处理（尿素 10 g+ 过磷酸钙 20 g+ 氯化钾 6 g）对苗木生长的促进作用最大，苗木质量指数最高，为最优施肥处理。其苗高年生长量、地径年生长量、冠幅年生长量、叶生物量、枝干生物量、根生物量以及总生物量分别是对照组的 227.10%、200.00%、226.96%、235.35%、169.88%、171.00%和 183.80%。（2）各处理的苗木质量指数从好到差排序为：223 处理（尿素 10 g+ 过磷酸钙 20 g+ 氯化钾6 g）＞ 122 处理（尿素 5 g+ 过磷酸钙 20 g+ 氯化钾 4 g）＞ 231 处理（尿素 10 g+ 过磷酸钙 30 g+ 氯化钾 2 g）＞ 133 处理（尿素 5 g+ 过磷酸钙 30 g+ 氯化钾 6 g）＞ 313 处理（尿素 15 g+ 过磷酸钙 10 g+ 氯化钾6 g）＞ 321 处理（尿素 10 g+ 过磷酸钙 20 g+ 氯化钾 6 g）＞ 332 处理（尿素 10 g+ 过磷酸钙 20 g+ 氯化钾 6 g）＞ 212 处理（尿素 10 g+ 过磷酸钙 10 g+ 氯化钾 4 g）＞ 111 处理（尿素 5g+ 过磷酸钙 10 g+ 氯化钾 2 g）＞ CK。（3）中华楠苗木施肥管理必须遵循适需的原则，氮肥不宜过高，可适当增施磷肥和钾肥。 |
| 关键词: 中华楠 施肥处理 苗木生长 生物量 |
| DOI： |
| 分类号: |
| 基金项目:广东省林业科技创新项目(2016KJCX013) |
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| Effects of Ratio Fertilization of N,P,K on Seedling Growth of Machilus chinensis |
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LIN Wen-huan, ZHU Xiao-wu, WU Yue-hong, LI Li, HUANG Hong-guang
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Shantou Insititute of Forestry Science,Shantou
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| Abstract: |
| The orthogonal design experiment of N, P, K fertilization with 3 factors and 3 levels was adopted. Studying the effects of fertilization with different ratio of N, P, K on growth of Machilus chinensis seedlings, so as to provide a theoretical basis for seedling cultivation of M. chinensis. (1) All the ratio fertilization of N, P, K had signifificant impact on the growth index of M. chinensis seedlings. The 223 dispose (carbamide 10 g + superphosphate 20 g + potassium chloride 6 g) had the maximum auxo-action. And the quality index number of seedling is the highest. so it’s the optimum dispose. The seedling height annual growth, ground diameter annual growth, crown breadth annual growth, leaf biomass, stem biomass, root biomass and total biomass were separately 227.10%,00.00%, 226.96%, 235.35%, 169.88%, 171.00%, 183.80%, compared with the matched group. (2) The order of seedling quality index of each treatment was: 223 (carbamide 10 g + superphosphate 20 g + potassium chloride 6 g) > 122 (carbamide 5 g + superphosphate 20 g + potassium chloride 4 g) > 231 (carbamide 10 g + superphosphate 30 g+ potassium chloride 2 g) > 133 (carbamide 5 g + superphosphate 30 g + potassium chloride 6 g) > 313 (carbamide 15 g + superphosphate 10 g + potassium chloride 6 g) > 321 (carbamide 15 g + superphosphate 20 g + potassium chloride 2 g) > 332 (carbamide 15 g + superphosphate 30 g + potassium chloride 4 g) > 212 (carbamide 10 g + superphosphate 10 g + potassium chloride 4 g) > 111 (carbamide 5 g + superphosphate 10 g + potassium chloride 2 g) > CK. (3) Fertilization management of M. chinensis seedlings must follow the principle of suitable demand. N should not be too high, P and K can be increased appropriately. |
| Key words: Machilus chinensis fertilize dispose seedling growth biomass |
