期刊论文

中文

核农学报

1000-8551

2002

16

2

75-79

10.3969/j.issn.1000-8551.2002.02.003

国家科委“九五”重大科技攻关项目 （95 0 0 1 0 1）研究内容之一；

本校为第一机构

本研究结果表明:超高产栽培(VSHM)条件下剑叶和倒2叶对14CO\-2的净同化强度分别极显著和显著高于对照,早稻和晚稻的趋势一致,是叶面积较大和单位面积光合速率较高所致.早稻和晚稻在灌浆结实期剑叶和倒2叶的14C-同化产物5d内有17.5%～21.0%滞留在标记叶内,滞留率晚稻大于早稻,倒2叶大于剑叶,不同栽培处理之间差异不明显.14C-的同化物有45.3%～65.4%向穗部运转,早稻大于晚稻,剑叶大于倒2叶,VSHM比CK略有提高.VSHM超高产栽培双季实际产量达17710kg/hm2,比对照提高18.33%,差异达5%的显著水平.

By applying the cultural method“Vigorous Root\|Strong Stem\|Heavy Panicle Cultural Method”(VSHM),the yield of double cropping rice reached 18000kg/hm\+2 in large area at Liling county, Hunan province.The net photosynthetic rate and 14 C distribution of rice leaves between VSHM and traditional cultural methods(CK) were compared.The photosynthetic rate of the flag leaves at ripening stages under VSHM was higher than that of controls with both earlier rice or later rice.Regarding the net amount of 14 C\|assimilate by a single flag leaf and the s...