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柑桔系多年生常绿果树,具有贮藏营养的特性,因而其贮藏营养物质水平的高低是衡量植株生长和结实能力的重要生理指标之一.氮素是柑桔的重要贮藏营养物质,秋肥对其营养状况的优劣关系极大.对此问题,日本学者进行了研究.本文就柑桔的贮藏氮素问题及其对开花座果的影响进行探讨,以揭示其相互变化关系,为提高果树的贮藏营养水平提供一些理论依据.一、材料和方法试验于1979—1982年在本所实验场进行,以21年生先丰橙(共砧)为观察试材.秋冬季单株施纯N量为O.2,0.4,0.7,1.6,2.3斤,分别以N_1,N_2,N_3,N_4,N_5表示.每一处理固定两株树为观察取样树.
Citrus perennial evergreen fruit trees, with the characteristics of storage and nutrition, and therefore the level of their stored nutrients is one of the important physiological indicators of plant growth and fruiting ability.Nitrogen is an important storage nutrient of citrus, The nutritional status of the pros and cons of great relevance to this problem, the Japanese scholars conducted a study on the issue of storage of nitrogen in citrus and its impact on the flowering of fruit to explore its mutual relations, in order to improve fruit trees Of storage nutrition level to provide some theoretical basis.First, materials and methodsThe experiment was carried out in our laboratory from 1979 to 1982, with 21 years Xianfeng orange (total anvil) as the test material. O.2, 0.4, 0.7, 1.6, 2.3 kg, respectively N_1, N_2, N_3, N_4, N_5.The two trees were fixed for each observation sampling tree.