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| Effects of the Formed Applying Organic Substrate Planting-board in Greenhouse Cultivation of Lettuce |
| MAO Xin1，YUAN Wenfei1，ZHANG Yi1，LI Yaling1，WEN Xiangzhen1，HOU Leiping1，BAI Longqiang 1* ，LI Yansu 2* |
1 College of Horticulture，Shanxi Agricultural University，Collaborative Innovation Center of Quality and Profit Improvement
for the Protected Vegetables of Shanxi Province，Taigu 030801，Shanxi，China；2 Institute of Vegetables and Flowers，Chinese
Academy of Agricultural Sciences，Beijing 100081，China |
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Abstract The formed organic substrate planting-board（OSP）cultivation is carried out by using
larger size planting-board with planting holes produced by pressing agricultural organic waste substrates．
Those planting-boards were lined up in greenhouses by robotic arm for vegetable production．This model is
suitable for mechanized vegetables cultivation．In order to seek the effects of OSP model on growth，yield
and quality of vegetables，this paper took lettuce as test material；conducted cultivation experiment on OSP
（decomposed sheep manure∶pea straw = 2 V∶1 V），taking conventional soil cultivation as the contrast．
The results showed that the growth vigor of lettuce grown in OSP was obviously stronger than that in soil
cultivation．And root vitality，chlorophyll content，net photosynthetic rate，single plant fresh weight
above ground and total N，P and K accumulation were obviously increased than those in soil cultivation，
amplification was 34.85%，10.42%，14.98%，101.00%，98.16%，69.96%，78.48%，respectively．The
contents of VC，soluble protein，soluble sugar in edible parts were obviously increased than those in soil
cultivation．While nitrate nitrogen content was significantly reduced，indicating OSP cultivation model could
satisfy demand for vegetable growth and development，and at the same time adapting to mechanized operation．
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Received: 11 November 2021
Published: 05 January 2022
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