| The selection of high yield maize cultivars suitable for dense planting and machine harvest in Hexi Irrigation District |
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| DOI：10.7606/j.issn.1000-7601.2019.05.21 |
| Key Words: machine grain harvest maize varieties grain moisture content grain-broken rate Hexi irrigation district |
| Author Name | Affiliation | | DING De-fang | Liangzhou District Agricultural Technology Extension Center, Wuwei, Gansu 733000, China | | CHAI Zong-wen | Gansu Agricultural Technology Extension Station, Lanzhou, Gansu 730020, China
Institute of Crop Science, Chinese Academy of Agricultural Sciences， Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture, Beijing 100081, China | | XU Xi-jun | Liangzhou District Agricultural Technology Extension Center, Wuwei, Gansu 733000, China | | ZHUANG Zhi-yang | Liangzhou District Agricultural Technology Extension Center, Wuwei, Gansu 733000, China | | YUAN Zheng-xiang | Liangzhou District Agricultural Technology Extension Center, Wuwei, Gansu 733000, China | | KONG Rong | Suzhou District Agricultural Technology Extension Center, Suzhou, Gansu 735000, China | | SUN Duo-xin | Gansu Agricultural Technology Extension Station, Lanzhou, Gansu 730020, China | | WANG Ke-ru | Institute of Crop Science, Chinese Academy of Agricultural Sciences， Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture, Beijing 100081, China | | LI Shao-kun | Institute of Crop Science, Chinese Academy of Agricultural Sciences， Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture, Beijing 100081, China | | ZHAO Gui-bin | Gansu Agricultural Technology Extension Station, Lanzhou, Gansu 730020, China |
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| Abstract: |
| In order to screen maize cultivars suitable for machine grain harvest in Hexi irrigation district, in the years of 2014, 2015 and 2017, six sets of maize cultivar selection tests suitable for machine grain harvest were carried out with total 122 cultivars (combination 122 items) in Liangzhou district and Suzhou district in Gansu province. The results showed that by using the two-way average graphic method to make figure according to average yield and grain moisture content, grain moisture content and yields of 33 cultivars accounting for 27.0% were lower and higher, respectively, than the averages. Seven cultivars including Dika 517, Denghai 618, Xianyu 335, Dika 519, Nonghua 101， Nonghua 106 and Lianchuang 808 performed better stability at 2 sites. The two-way average method was also used to make figure for further analysis according to grain-broken rate and grain moisture content, 11 cultivars were selected with lower grain broken rate and grain moisture content than the averages, including Dedan 1002, Zhongzhong 8, Dika 519 and Dika 517 (Suzhou district) with grain-broken rate of less than 5%, Dika 517 (Liangzhou district), Denghai 618, Zhenjin 318, Zhenjin 308, Dan 8201, M753 and zhengde 305 with grain-broken rate between 5% and 8%. Comprehensive evaluation showed that it was recommended that Dika 517, Dika 519 and Denghai 618 with low grain moisture content, high grain-broken resistance, and high yield level were suitable for machine grain harvest in Hexi irrigation district. |
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