杂交水稻半期旱作盆栽实验初报

在塑料大棚内,以2个杂交稻品种汕优63和扬两优6号为材料进行了半期旱作盆栽实验,半期旱作处理在分蘖盛期前保持浅水层,其后采用类似旱作(平均水势值为-13.5 kPa)的水分管理直到成熟,对照处理则保持浅水层直至成熟。半期旱作处理与对照相比,平均节省灌溉用水40.20%,2个杂交稻品种的水分生产率平均提高42.89%,稻谷产量平均增产3.29%,蛋白质含量平均增加0.38%。初步实验结果表明,水稻半期旱作具有节水、增产和提高营养品质的潜力。

A Preliminary Report on the Pot Experiment of Half-period Dry Management of Hybrid Rice

To test the effects of half-period dry management,two hybrid rice varieties Shanyou 63 and Yangliangyou No.6 were cultivated in pots inside a plastics greenhouse.The pots for half-period dry management treatment reserved shallow-water until the active tillering stage and then adopted dry management of soil(average water potential-13.5 kPa) in later growth stages while the control pots(CK) kept shallow-water during the whole growth duration.The half-period dry management saved 40.20% irrigation water compare...