| Effect of different humic acid liquid fertilizer on cotton growth and soil fertility |
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| DOI：10.7606/j.issn.1000-7601.2012.04.13 |
| Key Words: humic acid liquid fertilizer black liquor cotton dry matter accumulation nutrition uptake |
| Author Name | Affiliation | | WANG Ping | State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences (CAS), Urumqi, 830011, P.R. China | | TIAN Changyan | State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences (CAS), Urumqi, 830011, P.R. China | | ZHANG Xiaoyong | National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences (CAS), Beijing 100191, P.R. China | | MO Haitao | National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences (CAS), Beijing 100191, P.R. China |
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| Abstract: |
| In order to provide the evidence for resource utilization of black liquor, the field experiments of humic acid product from black liquor were carried out in North Xinjiang. With designing three fertilizer treatments HALF-A, HALF-B, HALF-C and five level method, to study the effect of humic acid product on the cotton growth and soil fertility. The experiments showed that: (1) compared with the conventional solid fertilizer, humic acid liquid fertilizer could remarkably increase the cotton yield by 8.5%～10.8%, boll weight increased by 0.2～0.3 g, but lint percentage and Boll per plant was not affected. (2) Compared with the conventional solid fertilizer, humic acid liquid fertilizer could delay the harvest time by 2～4 day. (3) Compared with the conventional solid fertilizer, 2 250 kg/hm2 humic acid liquid fertilizer could evidently promote dry matter accumulation amount of after flower period. (4) compared with the conventional solid fertilizer, three humic acid liquid fertilizer promote nitrogen uptake by application amount about 3 000 kg/hm2, meanwhile, 2 250 kg/hm2 HALF-B and 3 000 kg/hm2 HALF-C can increase phosphorus uptake, 3 750 kg/hm2 of this three humic acid liquid fertilizer can increase Potassium uptake. (5) the cotton experiment results supported that humic acid product from black liquor could not evidently increase soil fertility by one year experiments. |
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