摘要
为充分利用温光敏两系杂交小麦的分蘖优势，降低杂交种的用种成本，对“云杂3号”最佳种植密度进行了研究。结果表明，4种基本苗（30×10^4/hm^2、60×10^4／hm^2、90×10^4/hm^2、120×10^4/hm^2）间产量差异不显著；但生育期随种植密度的下降而延长。从平衡用种成本和生产应用的角度考虑，在自然条件和栽培水平与昆明类似的生态区，“云杂3号”的最佳种植密度为基本苗90×10^4/hm^2；在灌溉条件较好、栽培水平较高的地区。60×10^4／hm^2的基本苗更能充分发挥“云杂3号”的分蘖优势，进一步降低用种成本。
In order to fully utilize the tillering advantage of thermo-photo-sensitive two-line hybrid wheat to minimize the seed cost of unit area in application, the optimum density of hybrid variety Yunza 3 was studied. Results showed that no significant difference in yield among 4 basic seedling designs of 30×10^4/hm^2, 60×10^4/hm^2, 90×10^4/hm^2 and 120×10^4/hm^2 was observed. However, the whole growing duration increased with the decrease of sowing densities. Considering the balance of seed cost and practical application in production, in area having similar natural and cultivation conditions with Kunming, the optimum sowing density of Yunza 3 was 90×10^4/hm^2 in basic seedling, while basic seedling at 60×10^4/hm^2 would exert and utilize the tillering advantage of Yunza 3 better in area with better irrigation and higher cultivation level, which would reduce the seed cost further.
出处
《西南农业学报》
CSCD
2006年第B09期166-169,共4页
Southwest China Journal of Agricultural Sciences
基金
云南省发改委高新技术产业化试验示范项目（云计1999[096]）.
关键词
两系杂交小麦
种植密度
产量
two-line hybrid wheat
sowing density
yield
