【摘要】 为了探明保水剂(SAP)、黄腐酸(FA)两种化学制剂联合调控对设施番茄生长和水分利用效率的影响,根据施用SAP、FA的不同组合及灌溉定额的不同设置了:S、F、SF、SFL、CK 5个处理,进行了对比试验。结果表明:SAP和FA能显著促进番茄生长、提高土壤含水率、产量和水分利用效率。在灌水相同的情况下整个生育期内SF处理的土壤含水率最高,较S、F、CK处理平均增加5.0%、10.6%、17.0%;S、F处理较对照处理CK分别提高13.0%、4.0%。SF处理的产量最高为111.8 t/hm~2,较S、F、CK处理增加8.6%、6.8%、14.1%。SFL处理较其他处理少灌一次水,产量为110.6 t/hm~2,增产12.9%,水分利用效率最高,为50.3 kg/m~3,较CK处理提高23.1%。SAP和FA联合调控的蓄水保墒和增产效果显著。更多还原

【Abstract】 In order to explore the effects of the combined regulation of two chemical agents, SAP and fulvic acid, on the growth and water use efficiency of greenhouse tomato plants, 5 treatments were set according to the different combinations of SAP and FA and irrigation quota, including S, F, SF, SFL and CK. The results showed that: SAP and FA could significantly promote tomato growth, increase soil moisture content, yield and water use efficiency; under the same irrigation condition, the soil moisture content of SF treatment in the whole growth period was the highest, with an average increase of 5.0%, 10.6% and 17.0% compared with that of S, F and CK treatment; the soil moisture content of S and F treatment were 13.0% and 4.0% higher than that of CK treatment, respectively; the maximum yield of SF treatment was 111.8 t/hm~2, which increased by 8.6%, 6.8% and 14.1% compared with S, F and CK treatment; compared with other treatments, SFL treatment used less irrigation water, resulting in a yield of 110.6 t/hm~2 and an increase of 12.9%, with the highest water use efficiency(50.3 kg/m~3) and a 23.1% increase compared with CK treatment. The combined regulation of SAP and FA can control water conservation and increase yield effectively.更多还原