痕量灌溉管不同埋深对日光温室沙培黄瓜的影响

以微喷灌溉(CK)为对照,研究痕量灌溉管在沙培中不同埋深对日光温室春季黄瓜生长、产量和水分生产效率等的影响.结果表明,T3处理(25cm)的黄瓜生长与CK(微喷)相比受到显著抑制,T1 (5cm)、T2(15cm)处理黄瓜生物积累量、叶片净光合速率、果实品质与CK相比均有所提高,不同处理间叶片电导率、MDA、根系活力差异不显著,T1、T2、T3处理沙子含水量均低于CK;T1处理的产量比T2处理提高了1.9％;与CK相比的T1、T2处理水分生产效率分别提高50.9％、60.0％.分析表明,日光温室沙培黄瓜栽培中痕量灌溉管埋设深度为5 cm最佳.

Effects of trace irrigation pipe depth on cucumber cultured in sand in solar greenhouse

With spray irrigation for comparison (CK), the effects of trace irrigation pipe in sand culture in different depths in solar greenhouse on spring growth, yield and water use efficiency of cucumber were studied. The results showed that, compared with CK treatment, the growth of cucumber in T3 treatment (depth at 25 cm) was significantly inhibited, while the bioaccumulation, leaf net photosynthesis rate, fruit quality in T1 (depth at 5 cm), T2 (depth at 15 cm) treatments improved. The leaf conductivity, MDA and root activity were not significantly different among different treatments. The sand moisture contents of T1, T2, T3 treatments were lower than that of CK treatment, and the water use efficiency of T1, T2 treatments increased by 50.9%, 60.0%. Compared with CK, the yield of T1, T2 treatments was not significantly different, and the yield of T1 treatment increased by 1.9% than T2 treatment. The result indicated that, race irrigation pipe at depth of 5cm was best for cucumber cultured in sand in solar greenhouse.