植物营养与肥料学报2010,16(6)：1402-1409 Plant Nutrition and Fertilizer Science
不同供锌水平对苹果幼树于物质和
锌积累及分配的影响
闫志刚"，张元珍2，张玉红"，王衍安2.3*，张福锁3*，束怀瑞
（1山东农业大学园艺科学与T程学院，山东泰安271018；
2山东农业大学生命科学学院，作物生物学国家承点实验室，山东泰安271018：
3中国农业大学植物营养系，北京100094）
摘要：采用盆栈砂培试验，研究了低、中、高3个供锌水平（Zn0.013、0.254和5.070mg/L)对萃果幼树干物质和锌积累、分配动态的影响。结果表明，锌的过量及缺乏均对果树的生长及养分吸收产生影响。生长初期，苹果幼树根系活动较晚，枝叶的快速生长主要利用根案中的养分，锌的积累量呈快速增加趋势，处理间差异显落；低锌处理，除根系明显增加外，其他器官变化较小，根系的锌分配比例明显高于中锌、高锌处理。说明生长后期，低锌、高锌抑制了树体的生长，且低锌处理的树体锌主要分布于地下，上运明显受阻；面中锌、高锌处理，地上部锌含量要高于根系。
关键词：锌水平；苹果幼树；干物质：运转与分配
中图分类号：S661.1.601
文章标识码：A
文章编号：1008505X(2010)06-1402-08
Effects of zinc fertilization on the dynamics accumulation and
distribution of dry matter and zinc in apple trees
YAN Zhi-gang" , ZHANG Yuan-zhen’, ZHANG Yu-hong', WANG Yan-an'-3, ZHANG Fu-suo'*, SHU Huai-rui'(I College of Horticulture Science and Engineering, Shandong Agricultural Uninersity, Taian, Shandong 271018, China;
2 State Key Laboratory of Crop Biology/College of Life Science, Shandong Agricultural University, Taian, Shandong 271018, China
3 Department of Plant Nutrition, China Agricultural Uninersity, Bejing 100094, China)
Abstract : A sand culture experiment was conducted to study the dynamic accumulation and distribution of dry mat-ter and zinc in organs of apple trees under three zinc application levels, Zn 0. 013, 0. 254 and 5. 07 mg/L. The re-sults show that the growth and nutrient uptakes of apple trees are affected under both the deficiency and excess of Zn supplies. There are little effects on the accumulation and distribution of dry matter and nutrient under different zinc levels at the early growth stage, and the nutrients in roots and stems are utilized by branches and leaves fo quickly growth. With the plant growth, the first peak of new roots turns up, the dry matter is accumulated quickly under different treatments, while the growth of roots is constrained by the deficiency and excess zine supplies, and the zinc contents in each organs are significantly increased except branches and the order is Zn3 > Zn2 > Znl. The dry matter accumulation is constrained by the deficiency and excess zinc supplies at the later growth stage, and zinc toxicity is happened under the excess zinc supply. The accumulation of zinc is increased quickly under the moderate and excess zinc supplies, however, the roots are increased under the deficiency treatment, and the distri-bution rate in root is significantly higher than that under the moderate and excess zinc supplies, These results indi cates that at the later growth stage, the plant growth is constrained by the deficiency and excess zinc supplies; dis tribution rate of zinc in roots is higher than that in shoots under the lower zinc treatment, while the content of zinc
收稿日期：2009-12-08
接受日期：2010-04-02
基金项目：国家"863"计划课题（2008AA102219）：国家科技支撑计划课题（2008BADA4B02）：山东农业大学青年科技创新基金项日资助。作者简介：同志制（1984一），男，山东平邑人，硕士研究生，主要从事果树营养生理研究。
→ 通i作者 Tel; 05388249144, E-mail; wyadau@ sdau.eda. en; Tel; 01062732499, E-mail; zhangfs@cau,edu. cn
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