|Table of Contents|

Effects of Reducing Water and Fertilizer on Yield,Quality of Mini-watermelon and Soil Moisture in Solar Greenhouse(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年09期
Page:
48-53
Research Field:
Publishing date:

Info

Title:
Effects of Reducing Water and Fertilizer on Yield,Quality of Mini-watermelon and Soil Moisture in Solar Greenhouse
Author(s):
LUO Qin1; CHEN Zhu-jun1; 2; LEI Jin-fan3; LIU Ya-li1; ZHOU Jian-bin1; 2
1.College of Natural Resources and Environment,Northwest A&F University,Yangling,Shaanxi 712100；
2.Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest China,Ministry of Agriculture,Yangling,Shaanxi 712100；
3.Yangling Agricultural Technology Extension Station,Yangling,Shaanxi 712100
Keywords:
solar greenhouse; mini-watermelon; soil moisture conditions; yield; irrigation schedule
PACS:
S 651
DOI:
-
Abstract:
With soil moistune in solar greenhouse as research object,with ‘Qianding No.1’ mini-watermelon as material,a field trial was conducted,the effects of different water and fertilizer treatments (CK,Conventional treatment,and two water and fertilizer saving treatments,i.e.,reducing 20% and 40% of water and fertilizer rates in comparison with CK) on nutrient absorption,yield,quality of early spring mini-watermelon,and continuously moisture dynamic changes in 0~20 cm and 20~50 cm soil layers were monitored by tension meter at a solar greenhouse in Yangling,Shaanxi were studied.The results showed that the soil relative water content was above 70% in 0~50 cm soil layer in the different treatments throughout the whole growing period of mini-watermelon,indicating the water supply was adequate.The soil water content in 0~20 cm and 20~50 cm soil layer of conventional and 20% water and fertilizer saving treatments reached or exceeded field capacity in transplanting and seedling stages,indicating the excessive irrigation problems.The irrigation amount of 40% water and fertilizer saving treatment was close to soil available water-storage loss,which was 41% canopy water evaporation of mini-watermelon.Compared to the conventional irrigation,reducing the water and ertilizer rates did not decreased significantly the nutrient uptakes of mini-watermelon among the different treatments,however,it increased the yield of mini-watermelon.40% water and fertilizer saving treatment increased the soluble sugar content of mini-watermelon,and the irrigation use efficiency increased from 59.8 kg/m3 to 82.8 kg/m3.The appropriate irrigation quota was 570 m3/hm2 for the local spring mini-watermelon according to this experiment.

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Last Update: 2014-08-13