核桃树体营养元素代谢规律研究

归纳总结了核桃树体器官主要营养元素的代谢规律,包括核桃叶片、营养枝和结果枝、根系、果实等器官,以及萌芽至落叶的整个生长期中N、P、K、Fe、Mn、Cu、Zn等主要营养元素的代谢规律;核桃主要器官在整个生长期N、P、K含量的变化规律,以春季萌芽期各器官中较高,至种仁充实期之前下降较大,到种仁充实期果实的含量急剧上升,而营养器官养分输送到果实使之大幅度下降;生产单位产量的干核桃至少需提供N、P、K的量,并根据核桃生长发育规律提出年度肥料分配方案;核桃种仁充实期和成熟期养分变化规律;种仁充实期应把K、N的作为施肥重点,P、Ca、Mg可以考虑少施或不施,Fe、Zn、Mn在土壤养分缺乏时需要施肥补充;核桃成熟期必须做到精准施肥才会有最佳效果,施肥量不足和过量施肥均会降低坚果重量和品质;必须充分成熟后采收,才能确保坚果重量和品质。

Nutritional Metabolism Law of Walnut Tree

This paper summarized the metabolic laws of the main nutrient elements of walnut tree organs:Summarized the main nutrient(N,P, K,Fe,Mn,Cu,Zn) metabolism of walnut leaves, nutrient branches and fruit branches, roots, fruits and other organs from sprout to fallen leav-es throughout the growing season; Summarized the changes of N, P and K contents of the main organs of walnut in the whole growth period, from the spring germination period of the organs are high, to the kind of kernel before the full decline, the content of fruits in the period of re-juvenation increased sharply, while the nutrient of nutrient organs was transported to the fruit to make a significant decrease, the amount of N, P, K provided by the dry walnut of the production unit produced by tree dismemberment, and according to the law of walnut growth and devel-opment of the annual fertilizer distribution program.Summarizes the law of nutrient change in the period of full and mature period of walnut breed, in the period of enrichment of kernel, K, N as the focus of fertilization, P, Ca, Mg can be considered less or not, Fe, Zn, Mn in the absence of soil nutrients need to add fertilizer;Walnut maturation must be precise fertilization will have the best results, excessive fertilization and excessive fertilization will reduce the weight and quality of nuts;must be fully mature after harvest, in order to ensure nut weight and qual-ity.