| Cite this article: | 江立.生物炭与氮肥不同配比对枣园土壤微生物特性和红枣产量的影响[J].灌溉排水学报,2020,(12):-. |
| JIANG Li.生物炭与氮肥不同配比对枣园土壤微生物特性和红枣产量的影响[J].灌溉排水学报,2020,(12):-. |
|
| |
|
|
| This article has been：Browse 1957Times Download 0Times |
|
|
|
| DOI： |
|
| Effect of biochar and nitrogen fertilizer on soil microbial properties and jujube yield |
|
JIANG Li
|
|
Nanyang City Yahekou Irrigation District Administration
|
| Abstract: |
| The object of this study was to evaluate the effect of combined application of biochar and nitrogen fertilizer on soil microbial properties and jujube yield base on two consecutive field experiments in the North China Plain. A field experiment was performed in Neihuang County, Henan Province from 2017 to 2018. The experiment treatment included seven treatments: CK (no fertilizer), three levels of biochar (10, 20 and 30 t/hm2) and two levels of nitrogen fertilizer (300 and 400 kg/hm2), soil enzyme activities, microbial communities were analyzed. The results as follows: (1) Compared with the control, the application of biochar and nitrogen fertilizer significantly improved the activities of soil catalase, urease and invertase, the highest catalase and urease activities were observed in B30N400 treatments, with increase of 93.9% and 71.4%, respectively. The highest increase in B30N300 treatments, with increase of 42.7% in soil invertase activity. (2) Soil microbial communities increased with the increasing biochar and nitrogen fertilizer addition, compared with the control, the numbers of bacteria, fungi and actinomycetes were increased by 25.4%～254.1%、49.5%～97.5% and 7.3%～54.1%, respectively. (3) Jujube yields in all biochar and nitrogen fertilizer treatments were higher than CK, the highest average jujube yields of 22052.73 kg/hm2 was observed in B30N300 treatments, increased by 28.5%. The optimal amounts for biochar and nitrogen fertilizer should be 30 t/hm2 and 300 kg/hm2, respectively according to these results and the real cost of production. |
| Key words: wheat-derived biochar; soil catalase activity; soil microbial community; yields |
|
|
|
|
|
|
