| Abstrakt: |
Mulched drip irrigation with brackish water is a highly efficient irrigation technology that combines brackish water, mulch and drip irrigation; it not only saves water but also efficiently uses brackish water resources. The optimal irrigation scheme of zucchini under drip irrigation with brackish water is considered for the comprehensive evaluation of the effect of drip irrigation with brackish water on zucchini growth. In this experiment, the soil moisture of the seedling, sprouting, flowering and fruiting stages of zucchini and the salinity of irrigated water were used as experimental factors, and nine treatments of zucchini under film drip irrigation with brackish water experiment were carried out by using an orthogonal design greenhouse. Results showed that the salinity of brackish water exerted a greater effect on plant height, yield, water consumption and soil salinity than soil moisture. With the increased salinity of brackish water, the plant height, yield and water consumption of zucchini decreased, whereas the salt content of soil increased. Different water treatments at various growth stages showed varying effects on plant height, yield, water consumption and soil salinity. The yield, water consumption and soil salt content after the growth period and utilisation of brackish water were used as evaluation indices. The optimum irrigation combination of brackish water drip irrigation for zucchini was obtained using the analytic hierarchy process and range analysis. The soil moisture content was controlled at 70%-90%, 60%-80% and 60%-80% field capacity in the seedling, sprouting and flowering periods, respectively, and the salinity of salt water was 3 .5 g/L. The results can reflect the effect of brackish water drip irrigation on zucchini and are in line with the actual situation of using brackish water for irrigation. This study can provide technical support for the efficient and safe drip irrigation of zucchini with brackish water. [ABSTRACT FROM AUTHOR] |
