| Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China |
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| DOI：10.7606/j.issn.1000-7601.2016.02.05 |
| Key Words: maize semi-arid and cold areas mulched drip irrigation fertilizer and density yield |
| Author Name | Affiliation | | ZHANG Fa-ming | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | YANG Ke-jun | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | LI Zuo-tong | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | ZHAO Chang-jiang | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | WANG Yu-feng | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | XU Jing-yu | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | ZHANG Yi-fei | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | WANG Zhi-hui | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | FU Jian | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | GU Ying-nan | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | YANG Xi-ling | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | LIU Hui-di | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | LIU Cheng | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | LIU Yu | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | FANG Yong-jiang | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | TANG Chun-shuang | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | WANG Cong | Key Laboratory of Crop Germplasm improvement and cultivation in Cold Area/College of Agronomy, Heilingjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China |
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| Abstract: |
| To investigate the cultivation practices for high yield of maize under mulched drip irrigation in the semi-arid and cold areas in western Heilongjiang province, maize variety Zhengdan 958 was used as the study material. In addition, nitrogen, phosphate, potash and planting density were selected as the four experimental factors, each of which was tested at five levels. A quadratic regression model was thereby employed to establish in accordance with rotation design statistical analysis methods (1/2 implement) to analyze the effects of different fertilizers and planting densities on grain yield. The results showed that each single factor had obvious influence on grain yield, exhibiting a trend of downward opening parabola. The effects of these four factors were in an order of nitrogen (N) > density > potash (K) > phosphate (P). Also, the marginal yield reduction caused by unit volume level applied was in a order of phosphate (P) > density > potash (K) > nitrogen (N). Coordination between nitrogen and phosphate had a mutual promoting effect on the increase of grain yield. To achieve a yield higher than 12231.97 kg·hm-2, the best combination of nitrogen and phosphate fertilizer, potash fertilizer, and planting density were as follows: 246.24～279.59 kg·hm-2 nitrogen; 133.77～151.52 kg·hm-2 phosphate; 82.85～97.16 kg·hm-2 potash and 79 676～85 324 plants·hm-2 planting density. |
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