| Autor: |
GUO Shanqiang, MO Yan, WU Zhongdong, WANG Jiandong, ZHANG Yanqun, GONG Shihong, XU Mingming, GUO Bin, SHEN Xinlei |
| Jazyk: |
čínština |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Guan'gai paishui xuebao, Vol 40, Iss 8, Pp 27-34 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
1672-3317 |
| DOI: |
10.13522/j.cnki.ggps.2019443 |
| Popis: |
【Objective】 Subsurface drip irrigation (SD1) is a water-saving technique but difficult to keep the surface soil moist to ensure seed germination in drought-prone areas. Alternate row planting (AP) combined with the raised bed has been developed as an effective cultivation to moisten the surface soil. The purpose of this paper is to experimentally investigate the suitable furrow depth to improve seedling emergence and sustain crop yield. 【Method】 We took spring maize as an example and used the variety Xuntian 1102 as the model plant. The field experiment was conducted from May 2018 to September 2018 in the National Water-saving Irrigation Engineering Technology Research Center at Daxing, Beijing. The depth of the furrows was 0 (CK), 10 cm (H10) or 15cm (H15). In all treatments, the seeds were drilled to 5 cm deep from the soil surface and the irrigation amount prior to seedling emergence was 30mm, same in all treatments. During the experiment, we measured the changes in soil moisture, seedling emergence and the ultimate yield in each treatment. 【Result】 Alternate row planting combined with the raised bed significantly increased soil moisture at the drilling points to facilitate seed germination. Compared to CK, irrigating 35 mm of water prior to seedling emergence in H10 and H15 increased soil moisture in the region proximal to the seeds by 18.2% and 25.7%, respectively. The improved soil moisture increased the seedling emergence rate to more than 88% in both treatments, equivalent to a14.6% (H10) or 16.3% (H15) increase over the CK (P |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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