后期营养调控对食用优质稻产量和品质形成的影响

2001年在湖南宁乡以优质早籼稻中鉴100、两系杂交稻组合香两优68和优质晚籼稻中香1号为材料，通过穗期喷施不同复配调节剂处理，研究了后期营养调控对产量和稻米品质性状及相关生理特性的影响效果。结果表明，后期营养调控可提高植株体内保护酶（SOD，POX）活性，延缓叶片和根系衰老，促进灌浆结实，有利于产量和品质的形成，并在2000年试验基础上，从早稻7种复配剂中筛选出了2种（M6,M7)，晚稻5种复配剂中筛选出了1种（Q2）集延缓衰老、提高产量、改善品质于一体的复合调节剂。

Effects of Nutrient Regulation at Late Stage on Quality and Yield of High-Quality Edible Rice

Effects of nutrient regulation at late stage on quality and yield of high quality edible rice are studied with one early rice variety (Zhongjian 100) and one two line early hybrid combination (Xiangliangyou 68) and one late rice variety (Zhongxiang 1) By spraying compound nutrient regulators at heading stage,we probe into the effects of nutrient regulators on yield and its components,rice grain quality and some physiological characters The results show that some formulas are beneficial to enhance the activity of roots and SOD,POX in flag leaves,effectively increase the chlorophyll content of leaves and have obvious effects on the delay of the senescence of plant roots and leaves and promotion of seed setting In addition they are beneficial to the formation of yield and grain quality Eleven tested compound nutrient regulators reveal that formula M 6,M 7 are the best for early rice and formula Q 2 for late rice