Consumptive Use and Salt Accumulation with Trickle Irrigation on Row Crops

摘要

Results of research conducted over a seven-year period on water use and salinity aspects of trickle irrigation are summarized. The major findings from these projects are published in various journal articles and theses listed under References. Plots were irrigated through bi-wall trickle tubing buried 10 cm below each crop row. Replicate plots were irrigated at rates to 0.6, 0.8, 1.0, 1.2 and 1.4 times the rate applied to control plots. A maximum yield of 37.2 t/ha of green chile was obtained with 94 cm water, which includes 13 cm rainwater. The mean salinity in soil with trickle irrigated chile showed little increase over a five-year period, indicating that trickle irrigation of row crops does not have to lead to high salt levels in the plant root zone.