菠萝蜜幼苗苗期主要养分变化
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摘要
为摸清菠萝蜜幼苗苗期主要养分变化规律,对菠萝蜜幼苗生长发育过程中植株主要养分含量进行了跟踪测定分析,以期为菠萝蜜种苗繁育和合理施肥提供参考。研究结果发现:在菠萝蜜幼苗的生长过程中,植株中的营养元素在不同的生育期呈现出不同的变化趋势。叶片发育前菠萝蜜幼苗中N、 P、 K和Ca的含量均较高,叶片发育过程中各养分呈显著下降趋势;叶片展开后植株中的N、 P和Ca恢复到比长叶前稍低的相对较高水平;植株中的K在菠萝蜜叶芽发育后显著降低,后一直维持在相对较低水平, Mg元素含量在菠萝蜜叶片生长发育过程中变化不大。
The contents of the main nutrients of young jackfruit plants at the nursery stage were determined during the growth and development stage,and their changes were analyzed to provide reference for plant raising and fertilizer application at the nursery stage of the jackfruit plants.The results showed that nutrient elements at different development stages tended to change in the plants of jackfruit during the growth at the nursery stage.Nitrogen,phosphorus,potassium,and calcium contents in the jackfruit were higher prior to the development of the leaves and significantly declined in the process of the leaf development.After leaf expansion the nitrogen,phosphorus and calcium contents in the plant were restored to a level slightly lower than those before leaf emergence.After the leaf bud development the potassium content decreased significantly in the plant,and maintained at a lower level.The magnesium content in the plant was changed a little bit during the growth and development of the jackfruit leaves.
The contents of the main nutrients of young jackfruit plants at the nursery stage were determined during the growth and development stage,and their changes were analyzed to provide reference for plant raising and fertilizer application at the nursery stage of the jackfruit plants.The results showed that nutrient elements at different development stages tended to change in the plants of jackfruit during the growth at the nursery stage.Nitrogen,phosphorus,potassium,and calcium contents in the jackfruit were higher prior to the development of the leaves and significantly declined in the process of the leaf development.After leaf expansion the nitrogen,phosphorus and calcium contents in the plant were restored to a level slightly lower than those before leaf emergence.After the leaf bud development the potassium content decreased significantly in the plant,and maintained at a lower level.The magnesium content in the plant was changed a little bit during the growth and development of the jackfruit leaves.
引文
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[2]高爱平,陈业渊,李建国.全身都是宝的“热带水果皇后”———菠萝蜜[J].中国果菜, 2003(4):33.
[3]谭乐和,吴刚,刘爱勤.菠萝蜜高效生产技术[M].北京:中国农业出版社, 2012:5.
[4]范鸿雁,王祥和.菠萝蜜高产栽培技术[M].海口:海南出版社, 2009.
[5]邓文明,苏宁,朱飞飞,等.热带果树在园林绿化中的应用———以兴隆热带植物园为例[J].中国热带农业, 2017(4):13-15.
[6]吴刚,陈海平,桑利伟,等.中国菠萝蜜产业发展现状及对策[J].热带农业科学, 2013, 33(2):91-97.
[7]李移,李尚德,陈杰.菠萝蜜微量元素含量的分析[J].广东微量元素科学, 2003(1):57-59.
[8]白亭玉,吴刚,郝朝运,等.海南菠萝蜜种植园土壤与叶片微量元素含量分析研究[J].热带农业科学,2017, 37(7):1-5.
[9]刘丽雅.菠萝蜜叶片营养元素含量的动态变化研究[D].湛江:广东海洋大学, 2018.
[10]鲍士旦.土壤农化分析[M].北京:中国农业出版社,2000:268-280.
[11]梁燕.不同N素水平对苹果幼苗生长发育的影响[D].咸阳:西北农林科技大学, 2015.
[12]樊红柱.苹果树体生长发育、养分吸收利用与累积规律[D].咸阳:西北农林科技大学, 2006.
[13]陆志峰,鲁剑巍,潘勇辉,等. K素调控植物光合作用的生理机制[J].植物生理学报, 2016, 52(12):1 773-1 784.