不同覆盖方式调亏灌溉对梨枣树果实膨大期光合特性的影响

Influence of Regulated Deficit Irrigation Under Different Covering Patterns on Photosynthesis Characteristic of Pear-Jujube Tree in Fruit Expanding Stage

试验在梨枣树果实膨大期通过标准灌水和亏水2个灌水水平与裸地不覆盖、秸秆覆盖、地膜覆盖3种覆盖方式结合,研究在调亏灌溉模式下不同的覆盖条件下研究桶栽梨枣树光合特性的影响。结果表明秸秆覆盖最有利于树体光合作用,蒸腾作用,地膜覆盖次之,裸地不覆盖最不明显;对于胞间CO2浓度及气孔导度3种覆盖方式影响均不明显。

Test in LiZao tree fruit expands the period through the standard irrigation and water deficit two irrigation level and bare land does not cover,straw mulching plastic film mulching,three cover means union,research in regulated deficit irrigation（rdi） mode different cover under the conditions of barrel LiZao planted tree photosynthetic characteristic influence.The results showed that straw mulching most favorable to tree body photosynthesis,the transpiration,plastic film mulch is the second smallest,and bare land does not cover the most is not obvious,For the intercellular CO2concentration and stomatal conductance three cover means effects are not obvious.