Effects of embedding position of moisture sensors on growth characteristics of tomato in substrate culture in greenhouse

doi:10.3969/j.issn.1004-1524.2017.06.11

›› 2017, Vol. 29 ›› Issue (6): 933-942.DOI: 10.3969/j.issn.1004-1524.2017.06.11

• Horticultural Science • Previous Articles Next Articles

Effects of embedding position of moisture sensors on growth characteristics of tomato in substrate culture in greenhouse

CAO Shaona¹, LI Jianshe^1,2,*, GAO Yanming^1,2, WU Suping³, LIU Mengjin¹, LI Juan¹

1. School of Agriculture, Ningxia University, Yinchuan 750021, China;
2. Ningxia Modern Facilities Horticultural Engineering Technology Research Center, Yinchuan 750021, China;
3. College of Information Engineering, Ningxia University, Yinchuan 750021, China

Received:2016-11-23 Online:2017-06-20 Published:2017-09-07

Abstract

Abstract: In order to study the effects of moisture sensor embedded position of real-time control irrigation system on growth characteristics of tomato in greenhouse, and to improve the precision and intelligence of water management in greenhouse substrate culture, the variety of Jingfan 301 was selected as the tested tomato, and single factor randomized block design of experiment was carried out with a total of 6 treatments and 3 replicates in each treatment. Using the same water upper and lower control irrigation, the effect of different treatments on growth indicators, photosynthetic indexes, quality, yield, dry matter, irrigation indicators and plant nutrients of tomato were analyzed. The results showed that T3 treatment (horizontal distance of 10 cm, vertical distance of 10 cm) had stronger root system, higher root to shoot ratio; and the accumulated values of net photosynthetic rate and transpiration rate were the highest, as well as the biggest plant fresh weight. T1 treatment (horizontal distance of 5 cm, vertical distance of 10 cm) had biggest plant nutrient accumulation. T4 treatment (horizontal distance of 10 cm, vertical distance of 15 cm) had highest light energy conversion. But, T3 treatment (horizontal distance of 10 cm, vertical distance of 10 cm) showed the highest ratio of sugar to acid and Vc content, and the production was up to 59 749.21 kg·hm^-2, significantly higher than other treatments. Water production efficiency in T3 treatment (horizontal distance of 10 cm, vertical distance of 10 cm) was the highest, which was up to 9.58 kg·m^-3 and better than that of T2 treatment (horizontal distance of 5 cm, vertical distance of 15 cm). According to the comprehensive analysis, for greenhouse tomatoes, the matrix moisture sensor at 10 cm from horizontal distance and 10 cm below the dripper was the suggested treatment.

Key words: tomato, matrix, sensor, position

CLC Number:

S626.5

CAO Shaona, LI Jianshe, GAO Yanming, WU Suping, LIU Mengjin, LI Juan. Effects of embedding position of moisture sensors on growth characteristics of tomato in substrate culture in greenhouse[J]. , 2017, 29(6): 933-942.

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Effects of embedding position of moisture sensors on growth characteristics of tomato in substrate culture in greenhouse

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