论文部分内容阅读
根据施肥标准的要求,以3年生自根巨峰为试材,分别于休眠期(1月18日),8叶期(5月17日),开花期(6月8日),结实期(6月28日),着色期(7月23日),成熟期(8月27日),落叶前(10月22日)挖出4株树,分器官进行5种营养元素的分析。成熟期叶面积为8.84m~2的调查树一年营养吸收量以Ca最多(71.44克),依次为N(35.61克)、K(24.51克),P(16.56克)和Mg(6.64克)。地上部对N的吸收,在结实前较缓慢,结实后迅速增加,至成熟期又减慢。一年生枝、老枝、老根和新根从生长到落叶,N的吸收始终是持续增加。P的吸收动态表明,从座果开始一直是缓慢增加,到成熟期则变为大量吸收,尤以果实、叶最多,老根较少。K的吸收从开始生长就保持活跃,在果实发育期以果实和叶吸收
According to the requirements of fertilization standard, taking 3-year-old root-jumbo as test material, respectively, during the dormant period (January 18), the 8-leaf stage (May 17), the flowering period (June 8) April 28), coloring period (July 23), maturity (August 27) and deciduous (October 22). Four trees were excised and organs were analyzed for five nutrient elements. The annual nutrient uptake of the surveyed tree with 8.84m ~ 2 leaf area at maturity was Ca (71.44g), followed by N (35.61g), K (24.51g), P (16.56g) and Mg (6.64g) . The uptake of N by shoots was slower before fruiting, rapidly increasing after fruiting, and slowed down to maturity. Annual branch, old branch, old root and new root from growth to the deciduous, N absorption is always increasing. P absorption dynamic shows that from the beginning of the fruit has been slowly increased to mature into a large number of absorption, especially in fruits, leaves the most, less root. The absorption of K remains active from the beginning of growth and is absorbed by fruits and leaves during fruit development