| Study on the effects of stabilized fertilizer combined with microbial agent on growth and quality of lettuce |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2021.02.04 |
| Key Words: lettuce stabilized compound fertilizer microbial agent combined application growth quality |
| Author Name | Affiliation | | KUAI Jialin | Institute of Vegetables, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | MA Yanxia | Institute of Vegetables, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | HOU Dong | Institute of Vegetables, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | ZHANG Yuxin | Institute of Vegetables, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | YAO Tuo | College of Grass Industry, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | YU Qingwen | Institute of Vegetables, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China |
|
| Hits: 867 |
| Download times: 369 |
| Abstract: |
| In order to solve the adverse effect of excessive fertilizer application on yield and quality of open-field lettuce in irrigated desert areas, the effects of reducing the compound fertilizer of vegetable sulfate-based stability on the growth and quality of open-field lettuce were studied by using the compound fertilizer of sulfate-based stability instead of common fertilizer as the carrier of microbial agents. Six treatments were set up by a field experiment including no fertilizer (CK), local habit fertilizer treatment (CF), 100% stability compound fertilizer (T100), 80% stability compound fertilizer added microbial agents (T80), 60% stability compound fertilizer added microbial agents (T60), and 40% stability compound fertilizer added microbial agents (T40). The botanical characteristic index and quality index of lettuce in rosette stage and maturity stage were determined, and the fertilizer contribution efficiency and plasticity index were calculated. The results showed that, on the basis of adding 60 kg·hm-2 microbial agent, the dosage of stable compound fertilizer reduced no moere than 40% could not inhibit the growth of asparagus lettuce, but it promoted the weight of single plant increased by 9.94%~11.57%, the yield increased by 2.77%~10.27%, the content of Vc increased by 2.29%~10.23%, the content of soluble protein increased by 1.11%~1.38%, and the content of nitrate reduced by 14.13%~17.05%. The T60 treatment had the best performance. Compared with CF, the dry matter accumulation of roots, stems, and leaves increased by 17.38%, 5.77%, and 31.24%, the plant weight increased by 11.57%, the yield increased by 10.27%, the contribution rate of fertilizer increased by 7.16%, Vc content increased by 2.29%, soluble protein content increased by 1.38%, and nitrate content decreased by 17.05%. Based on the results of the one-year test, the appropriate fertilizer reduction measure in the production of lettuce in desert soil under the experimental conditions was 720 kg·hm-2 stable long-acting compound fertilizer adding 60 kg·hm-2 microbial fertilizer. |
|
|
|