寒地水稻节水控制灌溉技术研究

黑龙江垦区进行节水试验,试验结果表明：控灌处理用水量296.4 m3/667 m^2,较对照省水84 m3/667 m^2,但水分供应不充分,不能满足水稻生长的需要,具体表现为：株高较对照矮0.7 cm,单穴茎数较对照少0.5株,实粒数较对照少1.8粒,产量635.4 kg/667 m^2,较对照减产6.5%;节灌处理用水量345.5 m3/667 m^2,较对照省水20.9 m^3/667 m^2,水分能够满足水稻生长需要,并且因浅水灌溉增加水温、泥温,促进水稻分蘖,单穴茎数19.6株,较对照增加1.7株,促进水稻根系的发育,产量679.1 kg/667 m^2,较对照不减产,经济效益分析节灌处理增效2.6元/667 m^2,节约水资源的同时又增加了抽水的费用,具有实际的推广价值。

Study on Water Saving Irrigation Technology of Rice in Cold Region

The comparative test were made on control irrigation treatment, save irrigation treatment and conventional irrigation treatment. The results indicated that the water consumption of control irrigation treatment was 296.4 m^3/667 m^2 which can save 84 m3/667 m^2 than control, but it can＇t meet the needs for the rice growth which showed plant height was short 0.7 cm than control, the number of stems was lack 0.5 than control, grains per panicle was lack 1.8 than control and yield was 635.4 kg/667 m^2 which reduce 6.5% than control. Save irrigation treatment was 296.4 m3/667 m^2 which can save 84 m3/667 m^2 than control, tha water can supply the needs for the rice growth, because of shallow water can increase water temperature and mud temperature, promote tillering, the number of stems was 19.6 which add 1.7 than control, the yield was 679.1 kg/667 m^2, improving income 2.6 yuan/667 m^2 and it had high value of market popularization.