黑龙江省杂草稻的特征特性及耐冷性分析  

Characteristic of Weedy Rice and Cold Tolerance in Heilongjiang Province

作　　者：邹德堂[1] 

机构地区：[1]东北农业大学农学院,黑龙江哈尔滨150030

出　　处：《农业现代化研究》2008年第2期235-238,共4页Research of Agricultural Modernization

基　　金：国家科技攻关计划项目:寒地水稻优质高效技术集成及产业化(编号:2004BA907A27);黑龙江省博士后资助项目

摘　　要：以黑龙江省5种杂草稻为试验材料,以东农416为对照,研究杂草稻的耐冷性,结果表明:杂草稻在营养生长期时与栽培稻极为相似,抽穗期和成熟期均比当地栽培水稻品种短,株高偏高,分蘖力强,穗枝披散,生殖生长期时,衰老迅速,易倒伏,类似杂草,且边成熟边落粒;杂草稻的吸水能力除白长芒杂草稻Z1外普遍高于东农416;杂草稻种子的耐冷抗冻能力大于东农416,能在含水量较高的不利条件下保持一定的发芽率;在安全水分内的杂草稻种子可以正常发芽,在低于10℃的条件下,农416和各杂草稻的发芽率相差明显,红长芒杂草稻的发芽率明显大于其他杂草稻和对照东农416。The experiment materials were 5 weedy rice varieties in Heilongjiang Province, and the check was Dongnong 416, the cold tolerance of weedy rice was studied. The results showed： the weedy rice was similar with cultivated rice varieties in growth period, and its heading date and mature period were shorter than loca｜ cultivated rice varieties, its plant height was higher, tillering ability was strong, ear was scattered： in reproductive growth stage, weedy rice varieties were decrepit rapidly and aped to lodging, was similar with weed, and mature at the same time shattering;the absorbability was higher than that of Dongnong 416 except white long awns weedy rice variety Z1; the cold tolerance ability of weedy rice was stronger than that of Dongnong 416, and can keep some germination rate in high water content; the weedy rice varieties can burgeon normally in safe moisture,in the temperature below 10℃ ,difference between Dongnong416 and each weedy rice varieties was significant, the germination rate of red long awns weedy rice variety was lager than other weedy rice varieties and the check Dongnong 416.

关 键 词：杂草稻 耐冷性 发芽率 

分 类 号：S511.9[农业科学—作物学]