| Effects of whole film mulching and alternative narrow and wide ridges with bunch-seeding in furrows on production of dryland flax |
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| DOI：10.7606/j.issn.1000-7601.2017.02.11 |
| Key Words: flax whole film mulching and alternative narrow and wide ridges bunch-seeding soil water content |
| Author Name | Affiliation | | ZHANG Lei | Yuzhong Agricultural Technology Extension Center, Lanzhou, Gansu 730100, China | | LI Xiao-yan | Yuzhong Agricultural Technology Extension Center, Lanzhou, Gansu 730100, China | | NIU Fen-ju | Yuzhong Agricultural Technology Extension Center, Lanzhou, Gansu 730100, China | | DI Wei-li | Yuzhong Agricultural Technology Extension Center, Lanzhou, Gansu 730100, China | | ZHANG Cheng-rong | Yuzhong Agricultural Technology Extension Center, Lanzhou, Gansu 730100, China | | LI Sheng-ke | Yuzhong Agricultural Technology Extension Center, Lanzhou, Gansu 730100, China
College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| Aimed at the problems such as limited precipitation, low soil moisture and low emergence rate of flax in semiarid dry-farming regions in middle Gansu Province, a field experiment was conducted with four treatments including bare land with bunch-seeding (T1), half film mulching with bunch-seeding (T2), whole film mulching with bunch-seeding (T3), and whole film mulching and alternative narrow and wide ridges with bunch-seeding in furrows (T4), so as to probe the effects of different cultivation measures on the production of dryland flax. The results showed that T4 could prevent from soil hardening and increase emergence rate of flax, could reduce invalid evaporation and increase soil moisture content, and could raise soil temperature at early growing period and improve agronomic characters of flax, so it could increase yield and economic benefit significantly. Compared with T3, T2 and T1, T4 increased water use efficiency of flax by 28.28%, 40.33% and 116.17% respectively, and increased yield by 22.04%, 28.74% and 53.74% respectively. Therefore, the technology of whole film mulching and alternative narrow and wide ridges with bunch-seeding in furrows is an optimal cultivation mode for stable and high production of dryland flax. |
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