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| Effects of Biochar on Growth and Nutrient Uptake of Tomato Seedlings |
| XIA Ya-zhen1，2，TIAN Li-ying1，LI Sheng-li1*，BI Ming-ming1 |
| （1College of Horticulture，Henan Agricultural University，Zhengzhou 450002，Henan，China；2Seed Technology Extension Station of Pingdingshan City，Pingdingshan 467000，Henan，China） |
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Abstract The experiment studied the effects of biochar addition on tomato seedling growth and nutrient
uptake by adding biochar with different ratio（ 1∶1 mixture of wheat straw and peanut shell carbonized by high
temperature）into tomato nursery substrate. The result indicated that adding biochar（ 10%-30%） could improve
vent ability，reduce unit weight，increase pH value and EC value of nursery substrate. Compared with the
contrast，adding 20% biochar could significantly improve the stem thickness，healthy seedling index，root-shoot
ratio，chlorophyll content and root system activity of tomato seedlings by 24.29%，62.87%，31.29%，54.87%
and 26.86%，respectively．Besides，biochar addition in nursery substrate could also increase the absorption and
accumulation of N，P and K nutrients by tomato seedlings，which was very helpful for tomato seedling growth.
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Received: 22 January 2018
Published: 15 March 2018
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