‘马来西亚1号’菠萝蜜叶片氮磷钾动态的研究.docx
《‘马来西亚1号’菠萝蜜叶片氮磷钾动态的研究.docx》由会员分享,可在线阅读,更多相关《‘马来西亚1号’菠萝蜜叶片氮磷钾动态的研究.docx(16页珍藏版)》请在第一文库网上搜索。
1、,马来西亚1号菠萝蜜叶片氮磷钾动态的研究张峰 苏兰茜白亭玉吴刚谭乐和 李雯郭芮赵正杰表1土壤基本化学肥力指标Tab. 1 Basic chemical fertility status of soil0 5 0 5 0 543 2 2 1 17享心11栏03 UUMO-n-N昌海东文琼乐地点LocationPH有机质SOM/(gkg)碱解氮N/(mg kg-1)有效磷P/(mg kg-1)速效钾K/(mgkg-1)交换性钙Ca/(mg kg-1)交换性镁Mg/(mg kg-1)有效铜Cu/(mg kg-1)有效锌Zn/(mg kg-1)文昌7.0835.67119.728.58235.1487
2、2.09100.322.007.75琼海5.1537.78206.3713.86456.73486 64106 841.725.73乐东6.1717.98327.6832.0946.39507.0976.970.321.761月2月3月4月5月6月7月8月9月10月11月12月采样时间Sampling time图1叶片氮含量的动态Fig. 1 Dynamics of nitrogen content in leaves摘 要:通过对海南省文昌市南阳镇、琼海市大路镇、乐东县黄流镇3个地区马来西亚1号菠萝蜜叶片氮、磷、钾3种营养元素的周年变化规律跟踪调查分析,结果表明:3个地区菠萝蜜叶片营养元素变
3、化规律相似。元素年平均含量表现为氮钾磷。根据实际生产中的生育期调研分析,将菠萝蜜的生长周期大致划分为2个批次3个时期:第一批次养树期(1112月)、花芽分化期(12月)、结果期(34月);第二批次养树期(56月)、花芽分化期(78月)、结果期(910月)。生长周期内,氮元素含量年变化呈现字型变化趋势;磷含量在14月呈先上升后下降的趋势,随后呈缓慢上升趋势;钾含量变化趋势与氮含量变化相似,但钾元素含量变化没有氮元素变化明显。菠萝蜜叶片中大量元素含量的适宜范围为:全氮21.0322.15 g/kg,全磷2.86-3. 40 g/kg,全钾13.4914.47 g/kgo在生长发育过程中,菠萝蜜需氮
4、、钾元素较多,特别是在花芽分化期和结果期,应注意增施氮肥与钾肥,磷肥应于养树期施足。Key:菠萝蜜;营养特性;养分规律;适宜值:S667. 8: AAbstract: The annual changes of nitrogen, phosphorus and potassiumin the leaves of Malaysia No. 1 jackfruit in three locations inHainan were similar. The annual average content of elements was N K P. According to the investiga
5、tion of the growth period in actualproduction, the growth cycle of jackfruit is roughly divided intotwo batches and three stages, the first batch of tree growing stage(November to December) , the first batch of flower stage (Januaryto February) , the first batch of fruit stage (March to April),the s
6、econd batch of tree growing stage (May to June) , the secondbatch of flower stage (July to August) , the second batch of fruitstage (September to October) . During the growth cycle, the annualvariation of nitrogen content showed a trend of N shape. FromJanuary to April, the phosphorus content increa
7、sed first and thendecreased, and then increased slowly. The variation trend ofpotassium content was similar to that of nitrogen content, but thevariation trend of potassium content was not as obvious as that ofnitrogen content. The optimum range of abundant elements in theleaves of jackfruit was N 2
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 马来西亚 菠萝蜜 叶片 氮磷钾 动态 研究