论文部分内容阅读
采用负水头供水控水盆栽装置,通过设定不同的供水吸力(1、3、5、7、9、11和13kPa)稳定控制温室盆栽黄瓜的土壤水分值,研究其对黄瓜产量与品质的影响。结果表明:黄瓜单株产量、水分利用效率与商品率都随着供水吸力的增加先增加后减少,单株产量和商品率分别在3～9kPa和3～5kPa处理内达到最高;但3～13kPa处理内水分利用效率无显著差异。不同处理的果实含水量和比质量无显著差异,除1kPa处理的果实长、单果质量和果皮总色素含量显著较低外,其它各处理差异不显著。3～5kPa处理的果实单宁含量显著高于7～13kPa处理,但可溶性固形物、维生素C含量显著低于7～13kPa处理,3～7kPa处理范围的果实硝酸盐含量显著低于9～13kPa处理。综合分析,3～7kPa供水吸力范围内的黄瓜单株产量与整体品质较高,对应的土壤体积含水量范围为55%～81%。
The negative water head water supply control pot was used to control the soil water content of greenhouse cucumber plants by setting different water suction (1, 3, 5, 7, 9, 11 and 13kPa) to study the effect on cucumber yield and quality influences. The results showed that the single plant yield, water use efficiency and commodity rate of cucumber increased first and then decreased with the increase of water supply suction. The yield per plant and the commodity rate reached the highest within 3 ~ 9kPa and 3 ~ 5kPa respectively. However, There was no significant difference in WUE. There was no significant difference in the water content and quality of the fruits treated with different treatments, except for 1kPa long fruit, single fruit mass and total peel pigment content were significantly lower, the other treatments were not significantly different. The content of tannin in fruits treated with 3 ~ 5kPa was significantly higher than that treated with 7 ~ 13kPa, but the content of soluble solids and vitamin C was significantly lower than that of 7 ~ 13kPa. The nitrate content in fruits with 3 ~ 7kPa was significantly lower than that of 9 ~ 13kPa . According to the comprehensive analysis, the single crop yield and the overall quality of cucumber within the suction range of 3 ~ 7kPa were higher, and the corresponding soil volumetric water content ranged from 55% to 81%.