| Investigation on optimal mode of nitrogen and planting density for kidney bean in frigid region |
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| DOI：10.7606/j.issn.1000-7601.2016.05.15 |
| Key Words: kidney bean frigid region nitrogen plant density yield grain quality |
| Author Name | Affiliation | | YANG Guang-dong | Keshan Branch of Heilongjiang Academy of Agricultural Sciences, Keshan, Heilongjiang 161606, China | | HU Zun-yan | Keshan Branch of Heilongjiang Academy of Agricultural Sciences, Keshan, Heilongjiang 161606, China | | WANG Qiang | Crop Breeding Research Institute of Heilongjiang Academy of Agricultural Sciences, Harbin, Heilongjiang 150086, China | | MENG Xian-xin | Crop Breeding Research Institute of Heilongjiang Academy of Agricultural Sciences, Harbin, Heilongjiang 150086, China | | CHEN Lin-qi | Keshan Branch of Heilongjiang Academy of Agricultural Sciences, Keshan, Heilongjiang 161606, China |
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| Abstract: |
| To investigate the effects of nitrogen and planting density on field production, yield formation indexes, products and nutritional quality of kidney bean in north frigid region of Heilongjiang Province were studied. The result indicated that N fertilizer could significantly increase growth period and growth stage. The difference was not obvious by low density planting, while it reached significant level when the density was over 20×104 plants·hm-2. Number of pods per plant, pods grain number and grain weight were reduced with the increase of the density. No significant differences were observed among different nitrogen treatments. Commodity rate of kidney bean became decreased with the increase of density. Maximal Fat value (1.51%) was reached by the combination of 45 kg·hm-2 nitrogen and 10×104 plants·hm-2 density. No significant differences were found among the different treatments. The maximal protein content (14.55%) was obtained through the combination of 60 kg·hm-2 nitrogen and 10×104 plants·hm-2 density. No significant differences were seen in this combination, whereas significant ones were found in other combinations. Bean yield reached the highest level of 3 418.56 kg·hm-2 by 30 kg·hm-2 nitrogen and 20×104 plants·hm-2 density, which was similar to the yield by N 45 kg·hm-2 and 15×104 (3 417.46 kg·hm-2) and was significantly different from other combinations. In conclusion, through the analyses of economic benefits and grain quality, the best cultivation mode is the combination of 45 kg·hm-2 nitrogen and 15×104 plants·hm-2 plant density. |
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