摘要
采用大田试验,设置不同有机肥梯度(CK、M1、M2、M3),研究不同施肥处理对番茄根冠比、生物量、养分分配的影响。结果表明:施肥处理根冠比低于未施肥处理;M2茎叶及全株生物量最大,其次为M1;茎叶氮磷含量及累积量明显高于根系;M1和M2的茎叶和根系氮磷累积量差异不显著;M3的磷利用效率显著低于M1、M2,这可能是由于有机肥施用量过多;有机肥增强了钾的利用效率,钾利用效率为M3>M2>M1>CK,但处理间差异不显著。
A field trial was made to observe effects of organic fertilizer at different rates(M0(control):0 kg/ha;M1:7500kg/ha;M2:15000kg/ha:M3:22500 kg/ha)on the ratio/roots to shoots,biomass,and nutrient distribution of tomato.The treatments M1,M2 and M3 were found lower in ratio of roots to shoots of tomato than the control(M0).The treatment M2 produced the highest biomass of shoots,leaves and the whole plant,followed by the treatment M1.The contents and cumulative contents of nitrogen and phosphorus in the shoots and leaves were significantly higher than those in the roots.There was no significant difference in cumulative contents of nitrogen and phosphorus in the shoots,leaves and roots between M1 and M2.M3 was significantly lower in phosphorus use efficiency than M1 and M2,which might be due to excessive application of organic fertilizer.Organic fertilizer significantly enhanced the utilization efficiency of potassium.The utilization efficiency of potassium increased in the order of M3>M2>M1>M0,but there was no significant difference among all the treatments.
作者
岳学文
潘志贤
鲍忠祥
李建查
李坤
方海东
YUE Xuewen;PAN Zhixian;BAO Zhongxiang;LI Jiancha;LI Kun;FANG Haidong(Institute of Tropical Eco-Agricultural Sciences,Yunnan Academy of Agricultural Sciences/Yuanmou Dryhot Valley Botanical Garden,Yuanmou,Yunnan 651300;Landscaping Management Institute of Lufeng County,Chuxiong Yi Autonomous Prefecture,Yuanmou,Yunnan 651200)
出处
《热带农业科学》
2019年第9期35-39,共5页
Chinese Journal of Tropical Agriculture
基金
国家重点研发计划(No.2017YFC0505102-3)
关键词
生物量
分配
养分利用效率
biomass
allocation
nutrient use efficiency
