We aimed to investigate the effects of phosphate treatment on growth dynamics of wheat in wheat/corn intercropping system in southwest hil y area. [Method] Five phosphate fertilization levels were designed for wheat a...We aimed to investigate the effects of phosphate treatment on growth dynamics of wheat in wheat/corn intercropping system in southwest hil y area. [Method] Five phosphate fertilization levels were designed for wheat and corn respectively to investigate the effects of phosphate fertilization level on wheat/corn intercropping system by field block experiment. [Result] The number of til ers, plant height and yield component of wheat trended to increase with the increase of phos-phate fertilization amount and al reached the peak for phosphate fertilization amount of 135 kg/hm2. However, the number of til ers, plant height and yield component of wheat al decreased significantly with the further increase of phosphate fertilization amount. [Conclusion] Phosphate fertilization contributed to the wheat growth in a certain degree. However, excessive phosphate fertilization would affect final yield.展开更多
为了探讨台湾泥鳅在贵州喀斯特地区人工繁殖技术状况,试验采用人绒毛膜促性腺激素(HCG)、多潘立酮注射液(DOM)、注射用促黄体素释放激素A2(LHRH-A2)合剂对台湾泥鳅进行人工繁殖。结果表明:每尾台湾泥鳅注射400 IU HCG+4 000μg ...为了探讨台湾泥鳅在贵州喀斯特地区人工繁殖技术状况,试验采用人绒毛膜促性腺激素(HCG)、多潘立酮注射液(DOM)、注射用促黄体素释放激素A2(LHRH-A2)合剂对台湾泥鳅进行人工繁殖。结果表明:每尾台湾泥鳅注射400 IU HCG+4 000μg DOM+15μg LHRH-A2为较理想的催产激素配比,三批次繁殖的平均催产率为98.0%,平均受精率为90.1%,平均孵化率为88.7%,平均出苗率为87.2%。雌雄比为5.4∶1时,催产率最高,为98.5%;雌雄比为5.7∶1时,受精率最高,为91.2%。说明台湾泥鳅在该地区繁殖效果良好。展开更多
文摘We aimed to investigate the effects of phosphate treatment on growth dynamics of wheat in wheat/corn intercropping system in southwest hil y area. [Method] Five phosphate fertilization levels were designed for wheat and corn respectively to investigate the effects of phosphate fertilization level on wheat/corn intercropping system by field block experiment. [Result] The number of til ers, plant height and yield component of wheat trended to increase with the increase of phos-phate fertilization amount and al reached the peak for phosphate fertilization amount of 135 kg/hm2. However, the number of til ers, plant height and yield component of wheat al decreased significantly with the further increase of phosphate fertilization amount. [Conclusion] Phosphate fertilization contributed to the wheat growth in a certain degree. However, excessive phosphate fertilization would affect final yield.