双季杂交稻超高产栽培样方研究  

Studies on Super-high-yielding Cultivation of Double Cropping Hybrid Rice in Demonstrative Fields

作　　者：汪汉林[1,2,3] 赵立武[1,2,3] 文志平 李一平 吴福顺[1,2,3] 

机构地区：[1]中国科学院长沙农业现代化研究所 [2]湖南省湘乡市农业局 [3]湖南省农业厅

出　　处：《杂交水稻》1998年第5期14-17,共4页Hybrid Rice

基　　金：国家科委"九五"重大科技攻关项目

摘　　要：对１９９６～１９９７年在湖南省湘乡市进行的双季杂交稻超高产栽培样方的分析表明，通过采用选择优良品种、合理的肥料运筹、先进的化学调控和科学的水浆管理等综合栽培技术，样方获得了年产量１６．２３～１６．９７ｔ／ｈｍ２的高产量，比样方前３ａ（１９９３～１９９５）增产２．１２～２．８６ｔ／ｈｍ２，增产１２．８５％～１３．０４％，净增产值３３８４～４２２４元／ｈｍ２，经济效益显著。样方高产主要是由于前、中期生长发育快，群体结构合理，孕穗期净同化率和作物生长率高，后期光合生产优势强。By adopting comprehensive cultivation techniques such as selection of fine varieties, rational fertilizer-applying strategies, advanced chemical control, scientific water management for super-high-yielding cultivation of double cropping hybrid rice in demonstrative fields in Zhujin Village of Xiangxiang, Hunan Province, the following experimental results were obtained: ①in the earlier and middle stages the hybrid rice in the demonstrative fields growed fast with a rational population structure, 4.32～5.06 g/(d·m 2) of NAR and 26.95～32.43 g/(d·m 2) of CGR at booting stage, and in the later stage it still maintained a high photosynthetic superiority favourable to high yield; ②the annual yield of two crops in the demonstrative fields was 16.23～16.97 t/hm 2, 2.12～2.86 t/hm 2 more than that of the previous 3 years (1993～1995), with a net output value increase of 3 384～4 224 Yuan in RMB per hectare; ③the cost for the demonstrative fields was 6 299～6 320 Yuan in RMB per hectare, the net income was 16 959～19 611 Yuan in RMB, the output/input ratio was 3.68～4.12, the benefit of fertilizer nitrogen (pure nitrogen) was 43.7～48.6 kg of paddy per kg of nitrogen and the income for work was 36.41～40.84 Yuan/d.

关 键 词：杂交水稻 超高产栽培 经济效益 

分 类 号：S511.04[农业科学—作物学]