小麦新品种泛麦5号播期播量研究

对泛麦5号播期播量的研究表明:10月2日至11月6日,随播期推迟,苗高、叶龄、分蘖、次生根、单株鲜重都明显减少,有效穗略减少,但穗粒数和千粒重明显增加,产量三要素协调能力明显增强,产量差异不明显。在150~450万/hm2播量范围内,随播量增加,苗高、叶龄变化不大,分蘖、次生根和单株鲜重变化比较明显,有效穗明显增加,穗粒数和千粒重明显减少,但产量差异不显著,最佳播量为75~225万/hm2基本苗。不同播期的最佳播量为:10月上旬75万/hm2,10月中旬150~225万/hm2,10月下旬150~300万/hm2,11月上旬375~450万/hm2基本苗。

Study on Sowing Date and Seeding Rate of New Wheat Variety Fanmai 5

The study on the sowing date and seeding rate of Fanmai 5 indicated that during the period from Oct.2nd to Nov.6th,with the sowing date delaying,the height of seedlings,age of leaves,tillers,second roots and fresh weight of single plant decreased significantly,the number of bearing ears decreased slightly,but grain numbers per ear and 1 000-grain weight increased.The coordinating ability of 3 yield factors was very strong.Yields were not different significantly.In the range of(150～450)×104 basic seedling per hectare,with the increasing of seeding rate the height of seedlings and age of leaves were not affected obviously;the tillers,secondary roots and fresh weight of single plant were affected obviously.Number of bearing ear increased apparently,grain number per ear and 1 000-grain weight decreased clearly,but the yields were not different significantly.The suitable seeding rates were(75～225)×104 basic seedling per hectare.The suitable seeding rates on different sowing date were 75×104,(150～225)×104 and(225～300)×104 basic seedling per hectare on the first,middle and last ten-day periods of October respectively;and(375～450)×104 per hectare on the first ten-day period of November.