关键词: 高压电场, 杂粮种子, 生长势, 产量

Abstract:  Depending on the special feature of higher nutrition and medical value of miscellaneous grains, the related research has important significance in increasing farmers income, promoting the adjustment of agricultural industry structure and the development of agricultural economy. Based on the application background of improving grain yield and quality, the effects of highvoltage electrostatic field (HVEF) and high pulsed electric field (HPEF) pretreatment on the growth and yield of millet, buckwheat and sorghum crops was discussed. The HVEF pretreatment parameters were:  field strength of 10 kV, 15 kV, 20 kV, and the processing time of 30 min. And, the HPEF pretreatment were: pulse number of 30 , 50, 70， pulse time of 30 μs, 50 μs, 70 μs， and field strength of 500 V, 1 000 V, 1 500 V. The plant height, stem diameter and chlorophyll content in the jointing period and filling period, and the 1 000grain weight and yield of the three miscellaneous grains during the harvest period were tested. The results show that: the 1 000grain weight and yield of millet, buckwheat and sorghum was increased after HVEF pretreatment. There is significant effect (P<0.000 1) of the HPEF pretreatment parameters on the yield of millet, buckwheat and sorghum. It also has significant effect (P<0.000 1) on plant height of sorghum in jointing period and chlorophyll content in filling period. the HPEF pretreatment parameters have significant effects (P<0.05) on plant height during jointing period and filling period of millet. However, there is no significant effect of the HPEF pretreatment parameters on other photosynthesis parameters and 1 000grain weight of millet, buckwheat and sorghum. The yield of millet, buckwheat and sorghum increased with increase of highvoltage pulse electric field strength, pulse number and pulse time, respectively. The results can provide a basis for the application of electric field technology in miscellaneous grain planting and production.

Key words: high electrostatic field, miscellaneous grain seeds, growth potential, yield