| Effects of tillage and seeding methods on yield formation of dryland wheat |
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| DOI：10.7606/j.issn.1000-7601.2022.02.03 |
| Key Words: dryland wheat furrow sowing deep ploughing during leisure fallow period soil moisture content yield formation |
| Author Name | Affiliation | | LI Ruiya | College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi 030801, China
Provinces and Ministries Collaborative Innovation Center for High\|quality and High\|efficiency Production of Featured Crops on the Loess Plateau China, Taigu, Shanxi 030801, China | | SUN Min | College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi 030801, China
Provinces and Ministries Collaborative Innovation Center for High\|quality and High\|efficiency Production of Featured Crops on the Loess Plateau China, Taigu, Shanxi 030801, China | | REN Aixia | College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi 030801, China
Provinces and Ministries Collaborative Innovation Center for High\|quality and High\|efficiency Production of Featured Crops on the Loess Plateau China, Taigu, Shanxi 030801, China | | LIN Wen | College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi 030801, China
Provinces and Ministries Collaborative Innovation Center for High\|quality and High\|efficiency Production of Featured Crops on the Loess Plateau China, Taigu, Shanxi 030801, China | | QIN Jiwei | College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi 030801, China
Provinces and Ministries Collaborative Innovation Center for High\|quality and High\|efficiency Production of Featured Crops on the Loess Plateau China, Taigu, Shanxi 030801, China | | LI Lei | College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi 030801, China
Provinces and Ministries Collaborative Innovation Center for High\|quality and High\|efficiency Production of Featured Crops on the Loess Plateau China, Taigu, Shanxi 030801, China | | LU Pengfei | College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi 030801, China
Provinces and Ministries Collaborative Innovation Center for High\|quality and High\|efficiency Production of Featured Crops on the Loess Plateau China, Taigu, Shanxi 030801, China | | GAO Zhiqiang | College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi 030801, China
Provinces and Ministries Collaborative Innovation Center for High\|quality and High\|efficiency Production of Featured Crops on the Loess Plateau China, Taigu, Shanxi 030801, China |
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| Abstract: |
| Two major tillage methods of deep ploughing and no tillage and three sowing methods of furrow sowing, film mulch sowing and drilling sowing were designed to examine the effect of soil water on the dry land wheat yield formation and economic benefits during 2015-2017 in Shanxi Province Wenxi dryland wheat field experiment demonstration base. The results showed that deep ploughing during the fallow period significantly improved the soil water storage efficiency of 0~300 cm before planting in dryland wheat, reaching 46.97%~240.44%, which increased the soil water consumption during the growth period of dryland wheat from 6.48% to 13.07%. The number of ears, grains per ear, thousand\|seed weight and yield were increased by 3.32%~7.22%, 3.67%~6.53%, 1.11%~3.61%, 10.23%~13.16%, respectively. Compared with drilling sowing, the furrow sowing and film mulch sowing significantly increased the ear\|forming rate of dryland wheat by 5.99%~16.87%, and significantly increased the ear length by 0.8 cm to 1.7 cm. The number of fertile spikelets was increased 1 to 3. The number of ears and grains per ear increased to 5.28%~15.75% and 1.51%~11.25%, respectively. In addition, the use of moisturizing and furrow sowing after deep ploughing during the fallow period reduced the investment by 1 200 Yuan·hm-2 compared with inter\|film mulch sowing, mainly due to rotation. Farm machinery input, plastic film and artificial input of recycled plastic film increased the economic benefit by 622~754 Yuan·hm-2. After deep ploughing during the fallow period, the use of moisturizing and furrow sowing reduced the investment by 300 Yuan·hm-2 compared with conventional drilling sowing. Farmland machinery investment increased economic benefits by 1 430~1 899 Yuan·hm-2. In summary, deep ploughing during the fallow period was beneficial to accumulate precipitation and improve the bottom moisture. Combined with the exploration of soil moisture and furrow sowing was more conducive to increasing the soil water storage capacity of 0~300 cm, thereby optimizing the yield components and realizing the increase in production and efficiency. |
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