摘要
以‘陇椒5号’辣椒为试验材料,不施肥（CK）和普通施肥（CK1）为对照,通过盆栽方式,研究＂＂一次性基施＂＂不同缓释期高氮控释肥和＂＂一基多追＂＂普通化肥的施肥方式对辣椒生长、干物质积累以及不同器官干物质分配的影响,以期为辣椒栽培中合理使用控释肥提供理论依据。结果表明,与CK相比,施肥可显著提高辣椒株高、茎粗、叶面积的增长以及干物质的积累,促进辣椒地上部干物质积累,增强根系活力。辣椒移栽120天内,＂一次性基施＂控释肥的辣椒植株干物质积累量较＂一基多追＂普通化肥低19.3%~30.5%、干物质积累速率低20.8%~33.5%;移栽120天后,干物质积累量较＂一基多追＂普通化肥高3.9%~15.5%、干物质积累速率高60.9%~63.6%;干物质最大积累速率出现的时间滞后26~29天;＂一次性基施＂控释肥使根的干物质分配较＂一基多追＂普通化肥低8.3%~11.1%,叶片干物质分配较＂一基多追＂普通化肥高7.0%~7.2%。说明＂一次性基施＂控释肥有利于生育后期辣椒的生长。
Taking pepper ＇ Longjiao No.5＇ cultivated in pot as the material, no fertilizer （CK） and conventional fertilizer （CK1） as contrast, the author studied pepper plant growth, dry matter accumulation and the distribution of dry matter in each organ under different fertilizations： application of high nitrogen controlled- release fertilizer once and application of conventional fertilizer with ＂basal fertilizer once and top dressing many times＂, so as to save labor and fertilizer, increase fertilizer use efficiency, and provide a theory for the reasonable application of controlled-release fertilizer in vegetable production. Results showed that, compared with CK, fertilizers could enhance the plant height, stem diameter, leaf area, dry matter of shoot and total plant and root activity. 120 days after being planted, compared with the application of conventional fertilizer （CK1）, dry matter accumulation of controlled-release fertilizer applications （T3, T4） was 19.3%-30.5% lower, and the rate of dry matter accumulation was 20.8%-33.5% lower. 120 days after transplant, compared with CK1, dry matter accumulation of T3 and T4 was 3.9%- 15.5% higher, and the rate of dry matter accumulation was 60.9%-63.6% higher. The maximum rate of dry matter accumulation was 26-29 days later than that of CK1.Dry matter distribution in root of T3 and T4 was lower than that of CK1 by 8.3%-11.1%, but in the leaves, it was 7.0%-7.2% higher. Therefore, the basal application of controlled-release fertilizer once could benefit later growth of pepper.
出处
《中国农学通报》
2015年第22期105-110,共6页
Chinese Agricultural Science Bulletin
基金
甘肃省农业科技创新项目"日光温室蔬菜安全高效生产技术集成与示范"(GNCX-2013-37)
甘肃省高效基本科研业务费项目"日光温室标准化施肥技术研究与示范"
关键词
控释肥
辣椒
生长
干物质
分配
controlled-release fertilizer
pepper
growth
dry matter
distribution
