小麦、玉米控制灌溉技术研究

198 6～ 1998年 ,在山东省的 3个灌溉试验站 ,对冬小麦、秋玉米进行了控制灌溉试验 ,对农作物的多个生育阶段 ,按高产的要求 ,分别给予适时、适量的灌溉水 ,来控制作物不同生长期的根层土壤含水量 ,从而控制作物不同生长期根系对水分的吸收 ,培植农作物的“丰产群体结构”和与之相适应的“高产理想株型” ,适当降低无效的蒸腾量 ,使农作物能在高产的基础上再增产 .该项控制灌溉技术获得了明显的节水、增产效果 ,灌溉水的生产效率超过了 10kg/m3,产量超过了 8t/hm2 .

Controlled irrigation technology for wheat and corn

From 1989 to 1998, a controlled irrigation experiment was performed on winter wheat and autumn corn at three irrigated areas. In the experiment, appropriate volumes of irrigation water were supplied at proper times to control the water content in root soil during various growing periods, so as to control the amount of water absorbed by the root system, promoting the formation of a high yield group structure and a corresponding ideal high yield plant type, and increasing the yield of plants through proper reduction of ineffective transpiration from leaf surfaces. The technology has generated good effects in water saving and yield increase. With the technology, the productivity of irrigation water may exceed 10?kg/m 3, and the yield of plants may exceed 8?t/hm 2.