黑土区膜下滴灌不同灌水处理对玉米产量及水分利用效率的影响

Effects of different water treatments on corn yield and water use efficiency with drip irrigation under mulch in black soil region

以黑龙江玉米为试验材料,采用膜下滴灌,设置不同灌水处理方案,研究不同灌水处理对玉米植株形态、产量和灌溉水分生产效率的影响。结果表明,玉米产量受灌溉定额与灌水次数的双重影响,具有耦合效应。在本试验条件下,灌溉定额为795 m^(3)/hm^(2)(80 mm),灌水次数为5次可以获得最高的玉米产量及水分生产效率,5次灌水分别在苗期1次,拔节期2次,抽雄期1次,灌浆期1次。研究结果可为黑龙江地区玉米膜下滴灌合理灌溉及高产栽培提供参考依据。

Heilongjiang corn were used as experiment materials,using drip irrigation technique under mulch,studied different water treatments on corn plant morphology,yield and irrigation water productivity,The results show that corn yield under irrigation quota and irrigation frequency,as well as the influence of the coupling effect.Under the experimental conditions,irrigation quota of 795 m^(3)/hm^(2)(80 mm),irrigation frequency for 5 times can get the highest corn yield and water production efficiency,1 times irrigation in seedling stage,jointing stage two,tasseling stage one,filling stage 1 times.The results can provide a reference for the Heilongjiang region drip Irrigation reasonable irrigation and high-yielding maize cultivation.