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利用盆栽、筒栽、坑测和大田试验相结合的方法 ,研究了中瑞保水剂对冬小麦出苗率、根冠比及生长发育和产量的影响。结果表明 ,当土壤含水率介于 12 .1%～ 16 .8%之间时 ,用保水剂拌种可使冬小麦提早 1～ 3d出苗 ,出苗率增加 2 5 .0 %～ 31.7% ,沟施保水剂可使出苗率增加 3.3%～ 8.3% ;施用中瑞保水剂 ,苗期的主要作用是促进根系发育、增大根冠比 ,拔节以后则转为促进地上部分发育 ,使产量及其构成要素均有不同程度地增加 ,水分利用效率明显提高。
The effects of water-retaining agent of Zhongrui and Rui on the germination rate, root-shoot ratio, growth and development and yield of winter wheat were studied by means of pot, tube plantation, pit test and field experiment. The results showed that when the soil water content was between 12.1% ~ 16.8%, the seedling was pre-treated with water-retaining agent for 1 ~ 3d and the emergence rate increased by 25.5% ~ 31.7% The water-retaining agent can increase the emergence rate by 3.3% ~ 8.3%. When Zhongrui water-retaining agent is applied, the main function of seedling stage is to promote root development and increase the ratio of root to shoot. After jointing, All increased to different extents, and the water use efficiency obviously increased.