Đánh giá hiệu quả mô hình tưới nước tiết kiệm và kiến nghị phương pháp tưới phù hợp cho cây măng tây xanh trên địa bàn tỉnh Ninh Thuận

Abstract

Green asparagus is a valuable agricultural production, it is one of the main vegetables of Ninh Thuan province. Ninh Thuan is a sunny province with the lowest rainfall in Vietnam, developing an appropriate irrigation method for asparagus crop is one of the most important issues to improve the local agricultural production efficiency. This paper evaluates efficiency of different water-saving irrigation methods and suggests an appropriate irrigation method for green asparagus in the coastal sandy soils. The experiments of irrigation models was conducted in An Hai commune, Ninh Phuoc district including sprinkler, sprayer tape and drip irrigation models. The study compares the effectiveness of each models for green asparagus production. It is interesting to find that drip irrigation is the best model for green asparagus crop in the costal sandy soil, saving about 34.2 to 40.5% of irrigation water and increasing the crop yields from 25.6 to 40.3% when compare with sprinkler and sprayer tape irrigation models. The study suggested that water-saving irrigation (drip irrigation) method is an appropriate irrigation should be applied for green asparagus, adapting to drought conditions in Ninh Thuan province.

Keywords: Green asparagus, water-saving, drip irrigation, sprinkler irrigation, coastal sandy soil.