摘要
为了给通过施肥解决线辣椒连作障碍问题提供借鉴，于2005年在辣椒连作问题严重的陕西千阳县连续6a（2000～2005年）种植线辣椒的田间，研究了施用钾肥、鸡粪、抗重茬剂对线辣椒品种“陕椒2001”叶绿素含量、叶片净光合速率、株高、叶面积指数、单株商品果数、鲜椒产量的效应。结果表明。每公顷施腐熟干鸡粪4500kg和3000kg的2个处理在减轻连作危害方面效果较好，处理后所有测定指标都显著高于对照，单株商品果数分别比对照增加6个和5．5个，鲜椒产量分别比对照提高28．2％和25．7％，并且基本上达到了关中平原灌区非连作线辣椒的产量水平；每公顷施750kg硫酸钾的处理可以明显提高线辣椒的叶片叶绿素含量、净光合速率和叶面积指数，但对单株商品果数（平均比对照增加2．3个）和鲜椒产量（比对照提高12．5％）的效应有限；每公顷施375kg硫酸钾的处理和每公顷施1950mL抗重茬剂NEB-26的处理对多数测定指标的效应均不明显。
With the purpose of resolving the problem of continuous cropping obstacle in pepper by means of fertilizing, the experiment was carried out in a field that had been continuously used to plant pepper for 6 years （2000-2005） in Qianyang County of Shaanxi Province to study the effects of potassium fertilizer, chicken droppings and NEB-26 on the chlorophyll content, net photosynthetic rate, plant height, leaf area index, fruit number per plant and yield of the variety ＂Shaanjiao2001＂. The results showed that the effects of 2 chicken droppings treatments （4 500 kg/hm^2 and 3 000 kg/hm^2） were significant in alleviating continuous cropping obstacle. The fruit number per plant was 6 and 5.5 more than CK respectively, and the fresh fruit yield was increased by 28.2 96 and 25.7 96 respectively. The yield of these 2 treatments was similar to that in the no continuous cropping fields. Under the treatment of 750 kg/hm^2 K2SO4, the chlorophyll content, net photosynthetic rate and leaf area index were evidently increased, and the fruit number per plant and fresh fruit yield were increased by 2.3 and 12.5% respectively. However, the effects of 375 kg/hm^2 K2SO4 treatment and NEB-26 treatment were not significant in most determined items.
出处
《干旱地区农业研究》
CSCD
北大核心
2006年第5期77-80,114,共5页
Agricultural Research in the Arid Areas
基金
科技部"十五"攻关重大专项(2004BA516A09)
陕西省科技攻关项目(2005K01-G8-03)
关键词
线辣椒
连作障碍
施肥效应
硫酸钾
鸡粪
抗重茬剂
pepper
continuous cropping obstacle
fertilization effect
K2SO4
chicken droppings
NEB-26
