摘要
：１９９６～１９９７年在国家水稻工程醴陵基点，对杂交晚稻新组合威优１９８进行了连晚高产栽培技术和有关生理生态研究，创造了２ａ产量平均８．８ｔ／ｈｍ２的７．２ｈｍ２高产样方和９．５ｔ／ｈｍ２的高产丘。分析了威优１９８高产的主要原因，提出了大面积单产９．０ｔ／ｈｍ２的高产栽培技术要点。
The high-yielding cultural techniques and some physiological-ecological characteristics were studied on a three-line late hybrid rice Weiyou 198 at the National Rice Engineering Base (Liling, Hunan) in 1996～1997. The combination yielded a mean of 8.8 t/hm 2 on a planting area of 7.2 hm 2 when it was planted as double cropping late rice. The main reasons for high yield of Weiyou 198 were found as follows: (1) It had large panicle (153.2 spikelets/panicle), heavy 1 000-grain weight (31.6 g) and high seed setting percentage (82.3%). (2) It had high percentage of panicle-bearing tillers (71.4%) and strong stem. (3) It had vigorous root system (4.8 t/hm 2, stoving weight) and high biomass (20.6 t/hm 2, stoving weight) with a high harvest index (53.4%). A set of cultural techniques for Weiyou 198 to achieve a grain yield of 9.0 t/hm 2 on a large scale was put forward.
出处
《杂交水稻》
CSCD
北大核心
1998年第6期19-22,共4页
Hybrid Rice
基金
国家水稻工程项目
关键词
杂交晚稻
威优198
高产栽培
栽培技术
late hybrid rice
Weiyou 198
physiological and ecological characteristic
high-yielding cultural technique
