枸杞精准滴灌效益及土壤水分动态变化对比

Comparison of Precision Drip Irrigation Benefit and Dynamic Change of Soil Moisture of Wolfberry

以宁杞7号为指示品种,研究了滴灌对枸杞园土壤水分动态变化规律的影响,以及不同水肥处理对枸杞产量的影响。结果表明,2种水肥处理下土壤水分动态变化规律具有一致性,土壤水分含量主要受滴灌量的影响较大,滴灌量262.4mm+施N325.6kg/hm^2、P2O5316.2kg/hm^2、K2O300.0kg/hm^2处理(常规滴灌区)的土壤水分变化范围为15%~35%;滴灌量232.4mm+施N178.2kg/hm^2、P2O5105.4kg/hm^2、K2O60.4kg/hm^2处理(精准滴灌区)的土壤水分变化范围在5%~20%,常规滴灌土壤水分明显高于精准滴灌区。精准滴灌较常规滴灌增产13.3%,节本增效3.12万元/hm^2。

Taking Ningqi 7 was used as an indicator cultivar,the effect of drip irrigation on the dynamic change of soil moisture in wolfberry orchard and the effect of different water and fertilizer treatments on the yield of wolfberry were studied. The results showed that the dynamic change rules of soil moisture in the two water and fertilizer treatments are consistent,and the soil moisture content is mainly influenced by drip irrigation. The variation range of soil moisture under the treatment of drip irrigation 262.4 mm + fertilizer application N 325.6 kg/hm2,P2 O5 316.2 kg/hm2 and K2 O 300.0 kg/hm^2(the conventional drip irrigation area) was 15%~35%.The variation range of soil moisture under the treatment of drip irrigation 232.4 mm + fertilizer application N 178.2 kg/hm2,P2 O5 105.4 kg/hm2 and K2 O 60.4 kg/hm^2(the precise drip irrigation area)is 5%~20%. The soil moisture content of the conventional drip irrigation was significantly higher than that of the precision drip irrigation.Compared with the conventional drip irrigation,the precision drip irrigation increased production by 13.3%,saving 31 200 yuan/hm^2.