干旱区不同水分指标下限对成龄红枣生长和产量的影响

Influence of Different Water Index Lower Limit on the Mature Growth and Yield of Jujube in the Arid Areas

【目的】探明新疆成龄红枣主要生育期的适宜水分范围。【方法】通过控制土壤不同水分下限的田间正交试验,研究土壤不同水分下限对成龄红枣的生理生长及产量的影响。【结果】不同水分下限灌溉对成龄红枣的新梢增长量、叶宽等生理生长影响不明显,但随着土壤水分下限的提高果实膨大速度也随之提高。产量比较表明,处理1(土壤水分下限占田间持水量75%)产量明显高于其它两处理,而处理2、处理3产量之间差异不显著。总体来讲75%田间持水量处理对红枣的生理生长、产量及其它各生理指标都优于其它处理。【结论】依据合理的水分指标进行灌溉,可以有效提高红枣的产量。

[Objective]To verify the range of suitable water of mature red Jujube growth stage in Xinjiang.[Method] The soil moisture and lower limits of different orthogonal field experiment were controlled to study the effect of the lower limit of soil different moisture on the physiological growth and yield of mature jujube. [Result]The results obtained from the three kinds of soil moisture controlled irrigation experiment were as follows： the different water irrigation had little influence on mature dates limit the amount of shoot growth, leaf width and other physiological growfh, but the speed of fruit expasion increased with the increase of lower limits of soil moistrue. In comparison with the production, processing one （ soil moisture accounted for 75 % of field capacity ） ： production was significantly higher than that of other two treatments, while there were no signifieantly different yield between treatment two and treatment three . In brief, the physiological indexes of growth, yield and different physological indeves of jujube were superior to those of other treatments by 75 %. [ Conclusion] Based on reasonable indicator for irrigation water, the red jujube yield can be effectively improved.