阴害影响水稻产量的机制及其调控技术──Ⅳ植物生长调节剂防御水稻阴害的效果  

Mechanism of Insufficient Illumination Impact on Rice Yield and Its Controlling Technology ⅣPreventive Effects of Plant Growth Regulators Against Insufficient Illumination for Rice

作　　者：张更生[1] 李林[1] 

机构地区：[1]江苏省农业科学院

出　　处：《中国农业气象》1996年第1期1-5,共5页Chinese Journal of Agrometeorology

基　　金：国家自然科学基金

摘　　要：分析了植物生长调节剂８３００８、丰收素和抗逆剂防御水稻不同生育期阴害的效果。这三种调节剂可有效地提高分蘖期受阴害稻株的净同化率，增加干物质积累，改善糖氮代谢，增加植株体内糖分含量，提高糖氮比，从而促进受害植株分蘖，增加有效穗数；抗逆剂和丰收素可有效地改善灌浆期受害稻株的糖氮代谢，降低穗中氮含量，强化根系活力与净同化能力，提高结实率和千粒重，从而减小阴害造成的产量损失。Preventive effects of plant growth regulators 83008,Fengshousu and Kangniji against insufficient illunmination for rice was analyzed in his paper,To the rice plants experiencing the calamity in tilling stage,all the three regulators could effectively enhance net assimilation rate,increase accumulation of dry matter,improve metabolism of soluble carbohydrate and mtrogen and raise C/N ratio,and thus promote the impaired plants to tiller and increase the panicle number.To those filling under the disaster,Kangniji and Fengshousu could validly improve carbohydrate and nitrogen metabolism and decrease nitrogen content in panicles,strengthen root activity and assimilative capacity,increase full grain percentage and 1000-grain weight.Therefore,loss of yield due to insufficient illumination in the two stages could be decreased.

关 键 词：水稻 阴害 植物生长调节剂 防御 

分 类 号：S429[农业科学—植物保护]