论文部分内容阅读
[目的]了解峨边县海拔1200~1500m区域原种繁育基地春播马铃薯适宜的播期和密度。[方法]以川芋13脱毒原原种为材料,在大田条件下研究播期和密度对春播马铃薯生育期、出苗率、产量和水分利用效率的影响。[结果]随播种期的推迟,马铃薯播种至出苗天数缩短、出苗率提高、单株结薯数、群体中小薯数、产量和水分利用效率增加;播种密度对马铃薯播种至出苗天数、出苗率没有影响,但随播种密度的增加,单株结薯数、群体中小薯数、产量和水分利用效率显著增加。[结论]在峨边县海拔1200~1250m地区,马铃薯适宜的播种期为2月9日至3月1日,适宜的播种密度为12.0万窝/hm2,但最佳密度还未出现峰值,有待于进一步加大密度进行研究。
[Objective] The aim was to understand the suitable sowing date and density of spring potato in the original breeding base of Ebian County in the area of 1200 ~ 1500 m above sea level. [Method] With the original raw material of Sichuan 13 as raw material, the effects of sowing date and planting density on the growth period, emergence rate, yield and water use efficiency of spring sowing potatoes under field condition were studied. [Result] With the delay of sowing date, the sowing date of potatoes was shortened, the germination rate increased, the number of tuber per plant, the number of small tubers in the population, the yield and water use efficiency increased; However, with the increase of sowing density, tuber number per plant, small potato population, yield and water use efficiency increased significantly. [Conclusion] The suitable sowing date of potato in Ebian County was 1200 ~ 1250m from February 9 to March 1, and the suitable sowing density was 120,000 litter / hm2, but the optimal density had not yet appeared the peak yet. To further increase the density of research.