摘要
两用核不育杂交稻,W6154S×DF_0、W6154S×特三矮开花前和开花后6-7天追施氮、钾肥,明显提高生育后期叶片含氮量、叶绿素含量、绿叶面积, ̄(14)C-同化产物从剑叶的输出率(%)及分配到稻穗的量增加,可溶性糖和淀粉含量增加,穗粒性状改善,稻谷产量提高。但不同组合杂交稻上述性状有差异。
Nitrogen and potassium have been supllied at late growtn stage about 6~7days before/ after flowering of photoperiod-temperature sensitive genic male-sterile11nes of rice hybrids (PTGMSLR)(F_1)W6154S×DF_0 and W6154S×Tie-San-Ai.The nitrogen content in flag leaf ,chlorophyll total contents of top 3 leaves ,green leafarea, ̄(14)C-metabolism exported from flag leaf and accumulated in panicle,soluble sugarand starch contents in vegetative organs and panicle ,and gtain yield in N and K treat-menr at late growth stage increase more than that in control treatments of bare and basicmanure.The physiological aspects and grain yield are different in different rice hybrids(F_1) at condition of N and K treatments at late growth stage.
出处
《中山大学学报(自然科学版)》
CAS
CSCD
1994年第1期67-72,共6页
Acta Scientiarum Naturalium Universitatis Sunyatseni
关键词
水稻
氮肥
钾肥
生理效应
rice(PTGMSLR ,F_1 ), late growth stage ,nitrogen ,potassium, ̄(14)C,grainyield