Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (31): 7-12.doi: 10.11924/j.issn.1000-6850.casb20191100817

Special Issue: 烟草种植与生产

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Effects of Different Dosages of Silicon-Calcium-Potassium-Magnesium Fertilizer on Root Development and Tobacco Quality

Ma Cunjin1,2(), Ren Shiwei1, Zheng Lei1,2, Chen Jianqiu1,2()   

  1. 1Kingenta Ecological Engineering Co., Ltd., Linshu Shandong 276700
    2State Key Laboratory of Nutrition Resources Integrated Utilization, Linshu Shandong 276700
  • Received:2019-11-11 Revised:2020-02-20 Online:2020-11-05 Published:2020-11-20
  • Contact: Chen Jianqiu E-mail:macunjin@kingenta.com;chenjianqiu@kingenta.com

Abstract:

The main objective is to investigate the effect of a new soil conditioner on root development and tobacco quality and explore the fertilizer’s role in improving acidified soil. With ‘NC55’ as the test material, different dosages of silicon calcium potassium magnesium fertilizer gradient (0, 750, 1500, 2250 kg/hm2) treatment were set up in field to determine the agronomic indexes and root morphology and root physiological activity indexes by systematic sampling according to different organs of the plant. Experimental results showed that: the addition of silicon calcium potassium magnesium fertilizer improved the root development and tobacco quality within the range of gradient treatment. It showed that the root was stronger, the agronomic characters were significantly improved, tobacco quality and economic benefits were improved, and the chemical composition was more coordinated. With the increase of the dosage of silicon calcium potassium magnesium fertilizer, all the tested indexes showed a trend of rising first and then decreasing. Among them, the treatment dosage of 1500 kg/hm2was the best. Compared with the treatment without the application of silicon calcium potassium magnesium fertilizer, the morphological index of root increased by 25.06%, the physiological activity of root increased by 28.62%, the potassium content of leaves increased by 0.35 percentage points, the potassium content of leaves decreased by 0.35 percentage points, the output value increased by 3486.88 yuan/hm2, the average price increased by 1.23 yuan/kg, and the proportion of topped tobacco increased by 6.9 percentage points. But the dosage should be adjusted according to the soil pH and the specific acidification degree.

Key words: tobacco, silicon calcium potassium magnesium fertilizer, root development, agronomic character, tobacco quality

CLC Number: