| Analysis of the effect and suitability of bi\|annual planting model in northern Xinjiang |
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| DOI：10.7606/j.issn.1000-7601.2020.02.18 |
| Key Words: cropping pattern bi\|annual planting resource utilization efficiency economic benefit northern Xinjiang ecological zone |
| Author Name | Affiliation | | HOU Yusheng | College of Water & Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water\|Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi, Xinjiang 832000, China | | ZHANG Jinzhu | College of Water & Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water\|Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi, Xinjiang 832000, China | | WANG Zhenhua | College of Water & Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water\|Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi, Xinjiang 832000, China | | LI Wenhao | College of Water & Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water\|Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi, Xinjiang 832000, China | | WEN Yue | College of Water & Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water\|Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi, Xinjiang 832000, China |
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| Abstract: |
| In order to study the effect and suitability of bi\|annual planting patterns in northern Xinjiang ecological region, an optimized planting mode of efficient planting system was considered to enrich the planting model in the ecological zone and realize the diversification of planting model. In this paper, two years of repeated comparative experiments were carried out, and four different planting models were set up as spring wheat\|repeating oil sunflower, spring wheat\|complex silage corn, single crop cotton, and single crop spring sowing maize (designated as model 1, model 2, model 3, and model 4, respectively) to conduct a plot experiment. The resource and environmental utilization rate, water and fertilizer resources consumption and utilization, and economic benefits were studied under the four different planting models. The results showed that bi\|annual planting model was an optimized planting mode of efficient planting model in the development of the northern Xinjiang ecological zone. Areas with effective accumulated temperature greater than 4260 ℃ promoted the planting model, esp. Shihezi region 0℃ or higher active accumulated temperature reached 4 300℃~4 500℃, then, sowing wheat to meet demand. Compared with the single planting model, bi\|annual planting model had obvious advantages in dry matter production efficiency and distribution, and annual energy production. The dry matter production efficiency of model 1 was 111.04% and 29.53% higher than that of model 3 and model 4, respectively. Compared with model 3 and model 4, the dry matter production efficiency of model 2 increased by 123.56% and 37.21%, respectively. The annual energy production of model 1 was 102.68% and 28.02% higher than that of model 3 and model 4, respectively, and the annual energy production of model 2 was 114.10% and 35.24% higher than that of model 3 and model 4, respectively. The annual total radiation utilization rate, total radiation production efficiency, effective accumulated temperature distribution rate, and temperature production efficiency of model 2 all reached the maximum value, because the growth period of the model was 179~184 days, which was the longest among 4 models. The planting pattern spanned the longest time and contained the most abundant solar and thermal resources from May to September, which makes the utilization of solar and thermal resources more efficient. Because of the better market value of cotton and the efficient production capacity of spring\|sown maize, advantages of the two bi\|annual cropping systems in water and fertilizer resources utilization and economic benefits were not obvious. |
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