中国农业科技导报2025，Vol.27Issue(3)：239-249,11.DOI:10.13304/j.nykjdb.2023.0597
灌水下限和施肥量对膜下滴灌小型大白菜耗水及光合特性的影响
Effects of Irrigation Lower Limit and Fertilizer Application Amount on Water Consumption and Photosynthetic Characteristics of Mini Chinese Cabbage Under Drip Irrigation
摘要
Abstract
In order to explore the scientific irrigation and fertilization system of water saving,fertilizer saving,high yield and high efficiency of mini Chinese cabbage(Brassica pekinensis)in cold-cool irrigation area of Hexi,the mini Chinese cabbage planted in autumn were the research object,'Gold Queen'was used as a test material,and the effects of different water levels(low,H1;middle,H2;high,H3)combined with 3 fertilizer levels(low,F1;middle,F2;high,F3)on water consumption,photosynthetic characteristics and yield of mini Chinese cabbage under drip irrigation were studied.The results showed that irrigation,fertilization,water and fertilizer coupling all affected the water consumption,photosynthetic characteristics and yield of mini Chinese cabbage.The water consumption intensity of mini Chinese cabbage reached the maximum at the early stage of heading under different water and fertilizer coupling effects.The water consumption intensity of low water,medium water and high water treatment was 0.003 2,0.003 3 and 0.003 4 m3·d-1·m-2,respectively.Under the water and fertilizer coupling mode,the treatment of medium water and fertilizer increased the chlorophyll content,leaf net photosynthetic rate,stomatal conductance,transpiration rate and economic yield by 4.4%,10.4%,27.3%,23.6%and 62.3%respectively,and decreased the intercellular CO2 concentration by 3.0%,compared with the treatment of low water and low fertilizer.Comprehensive analysis showed that the suitable water and fertilizer coupling mode of autumn mini Chinese cabbage in cold-cool irrigation area of Hexi corridor in Gansu province was as follows:the lower limit of irrigation was 70%of field capacity,and the amounts of N,P2O5,K2O fertilizer were 330,195,450 kg·hm-2.Above results provided theoretical bases and technical supports for water and fertilizer management of autumn mini Chinese cabbage in Hexi cold-cool irrigation area.关键词
小型大白菜/膜下滴灌/耗水特征/施肥/光合特性Key words
mini Chinese cabbage/drip irrigation under mulch/water consumption characteristics/fertilizer application/photosynthetic characteristics分类
农业科技引用本文复制引用
马彦霞,陈静茹,王晓巍,张玉鑫,张俊峰,蒯佳琳..灌水下限和施肥量对膜下滴灌小型大白菜耗水及光合特性的影响[J].中国农业科技导报,2025,27(3):239-249,11.基金项目
国家自然科学基金项目(32060678) （32060678）
甘肃省自然科学基金项目(22JR5RA761) （22JR5RA761）
甘肃省农业科学院重点研发计划项目(2022GAAS26). （2022GAAS26）
