摘要
以蛭石为基质,研究甜椒的氮磷营养及其交互作用。适量的氮磷可促进植株生长、花芽分化和干物质积累。除苗期外,各生育期植株吸收氮磷量随氮磷水平提高而增加。多数情况下,在蕾、花期,中氮中磷(9mmol L^(-1)No_3^--N 和0.83mmol L^(-1)P)的处理,植株钾、钙、镁的积累量高于高氮高磷(12mmol L^(-1)No_3^--N 和1.26mmol L^(-1)P)处理;在座果期以后,后者超过前者。结果表明,产量以12mmol L^(-1)NO_3^--N 和1.26mmol L^(-1)P 的组合为最高,而采用9mmol L^(-1)No_3^--N 和0.83mmol L^(-1)P 的组合较为经济。
Pot experiments were carried out using vermiculite as medium to study the nutrition of Nand P and their interaction in sweet pepper.A proper amount of N and P could promote theplant growth,the flower-bud initiation and the accumulation of dry matter.The amount ofN and P absorbed by the plant increased with the increasing of N and P supplied in differentgrowing periods with the exception of seeding stage.In most cases,the accumulated amountsof K,Ca,and Mg in the treatment of medium N and P supplied were higher than those in thetreatment of high N and P supplied during the early and middle growing periods.But,the re-verse was true for the late growing stage.The maxium yield was obtained in the treatment of12 mmol L<sup>-1</sup>NO<sub>3</sub><sup>-</sup>-N and 1.26mmol L<sup>-1</sup>P,while the better economic treatment was found inthe combination of 9 mmol L<sup>-1</sup>NO<sub>3</sub><sup>-</sup>-N and 0.83mmol L<sup>-1</sup>P.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
1990年第A04期58-64,共7页
Journal of Nanjing Agricultural University
基金
国家自然科学基金资助的项目
关键词
甜椒
氮
磷
营养
花芽分化
sweet pepper
nitrogen
phosphorus
nutrition
flower-bud initiation
