JI Lidong,YANG Jianguo,FAN Liqin,et al.Study on Regularity of Water and Fertilizer Requirement With the Drip Irrigation of Melon Growing and Spatial Heterogeneity of Soil Salinity[J].Northern Horticulture,2015,39(16):50-52.[doi:10.11937/bfyy.201516012]
滴灌施肥条件下设施甜瓜需水、需肥规律及土壤盐分空间变异研究
- Title:
- Study on Regularity of Water and Fertilizer Requirement With the Drip Irrigation of Melon Growing and Spatial Heterogeneity of Soil Salinity
- Keywords:
- drip fertilization; melon; water requirement regulation; pattern of requirement of fertilizer; spatial heterogeneity of soil salinity
- 文献标志码:
- A
- 摘要:
- 以“伊丽莎白”甜瓜为试材，通过对设施甜瓜土壤含水量、全盐量、植株氮磷钾等进行定期监测，明确了滴灌施肥条件下设施甜瓜的需水、需肥规律及盐分空间变异特征。结果表明：滴灌施肥条件下，设施甜瓜全生育期累积耗水量为387.4 mm，日均耗水量均值为3.66 mm/d；每生产1 000 kg设施甜瓜需吸收N 2.71 kg、P2O5 0.72 kg、K2O 3.29 kg，其中N∶P2O5∶K2O=3.76∶1∶4.56；设施土壤盐分含量分布总体上呈现表聚性，以60 cm为分界，上层多呈半圈状分布，下层多呈面状或条块状分布。
- Abstract:
- Taking ‘Elizabeth’ melon as material,the indicators such as soil moisture，total salt and N，P，K of plant were monitored for a long term to study regularity of water and fertilizer requirement with the drip irrigation of melon growing and spatial heterogeneity of soil salinity.The results showed that the cumulative water consumption of the greenhouse melon for the whole growth period was 387.4 mm and the average daily water consumption volume was 3.66 mm/d.2.71 kg N，0.72 kg P2O5 and 3.29 kg K2O were absorbed by 1 000 kg melon(N∶P2O5∶K2O=3.76∶1∶4.56).The content of soil salt distribution appeared on the whole surface accumulation.With the cutoff 60 cm，the upper showed half circle distribution，lower mostly face shape or strip shape distribution.
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备注/Memo
第一作者简介：纪立东（1980-），男，硕士，助理研究员，现主要从事农业资源利用等研究工作。E-mail：jili521010@163.com. 责任作者：杨建国（1969-），男，博士，研究员，现主要从事农业水土养分资源高效利用等研究工作。E-mail：yjgnx@163.com. 基金项目：石嘴山市科技攻关计划资助项目。