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本试验模拟滴灌方法 ,在不同土壤层次进行灌水和施用氮磷养分的盆栽玉米试验 ,旨在探讨在不同土壤层次供应水分和养分对夏玉米幼苗生长、根系空间构型及玉米对养分吸收的影响。试验表明 :在土壤深层进行滴灌可以有效降低土面蒸发 ,提高水分和养分的利用效率 ,从而显著提高玉米幼苗的生长量 ;在不同层次施肥灌水 ,对玉米根系在土壤中的空间构型影响很大 ,进行深层滴灌可以极大促进根系在较深土壤中的发育 ;在不同土层施肥灌水对玉米幼苗吸收N、P、K三种养分的能力也有影响 ,深层施肥灌水提高了玉米对 3种养分的吸收量
This experiment simulated the drip irrigation method, potted maize experiment with irrigation and N, P application in different soil layers to investigate the effects of water and nutrients on the growth of summer maize seedlings, the spatial configuration of root system and nutrient absorption of maize in different soil layers . The results showed that drip irrigation in deep soil could effectively reduce the soil evaporation and increase the utilization efficiency of water and nutrients and significantly increase the growth of corn seedlings. Fertilization and irrigation at different levels had a great effect on the spatial configuration of maize roots in the soil Large, deep drip irrigation can greatly promote the root development in deeper soil; fertilization and irrigation in different layers of maize seedlings also have the ability to absorb N, P, K three nutrients, deep fertigation irrigation increased maize 3 Absorption of nutrients