Project : Research of techniques of water-saving and high yield whiter wheat Type: The Science and technology bureau of Shijiazhuang Host: Wang Shaoren (Professor) Address: Shijiazhuang Institute of Agricultural Modernization, CAS, 286 Huaizhong Road, Shijiazhuang, 050021 E-mail: csy@ms.sjziam.ac.cn Tel. : 0311-5871757, FAX: 0311-5614360 The main research person: Wang Shaoren(professor) Shijiazhuang Institute of Agricultural Modernization, CAS Jia Jinfeng (associate research) Agriculture bureau of Luquan Chen Suying(associate research) Shijiazhuang Institute of Agricultural Modernization, CAS Xin Xiushan(associate research) Agriculture the bureau of Luquan Nie Haiqin (Assistant Professor) Agriculture the bureau of Luquan Gao Shunchuan(Assistant Professor) Agriculture the bureau of Luquan Host Institute: Shijiazhuang Institute of Agricultural Modernization, CASJoint Institute: Agriculture bureau of Luquan Research period:1996-1998 Research aim: The wheat yield to be increased by 400 kg to 450 kg, water use efficiency to be increased by 1.2 kgs/ m3 to 1.8 kg/ m3 in the 1000 mu demonstrate area . Research content: This technique apply in the high yield and water-saving cultivation of winter wheat. By carrying out comprehensive techniques of engineering, agronomy, biology, the wheat yield can get 450 kg and total water consumption was 250 m3, center demonstrate area was 1000 mu, demonstrate area ten thousand mu. The result showed that the water use efficiency was 1.94kg/m3 in spray irrigation field. The new idea of this research is comprehensive the techniques of engineering, agronomy ( the straw mulching , zero or surface tillage and combing the storage and irrigation) and species. The comprehensive techniques can largely improve the water use efficiency. The result indicate the maximum water storage of root layer before sowing and minimum water storage in maturity in the drab soil region. It provides that wheat yield can get one thousand jin with two irrigation times if water storage in soil before sowing. The average wheat yield of two years in ten thousand demonstrate areas improve 56.8 kg/mu, water-saving 66.5 m3/mu, the total yield in ten thousand mu improve more than 1million kg, total water-saving more than 1 million m3, total economic was more than 2 million yuan. The well irrigation and high yield area in Hebei is 2 million mu ,all this kind of area can apply the techniques. If adopt this techniques, the total water consumption can save 99.7mm, It means that it can save water 66.5 m3 /mu, It cansave13.3 hundred million m3water in this area totally. It can alleviate the groundwater to descent. But this technique can only apply in the loam soil. Research Result: The research result was to be the lead level in domestic, and get the second prize of science and technology in 2000. key words: winter wheat, comprehensive water-saving technique, potential analysis, water use efficiency, Research budget: one hundred thousand yuan Deficit irrigation of Winter wheat and cotton Project name: Researches on deficit irrigation scheduling of winter wheat and cotton Source of the project: National Project leader: Zhang Xiying Shijiazhuang institute of Agricultural Modernization, The Chinese Academy of Sciences, Shijiazhuang 050021 Email: xyzhang1@heinfo.net Telephone: 86-311-5871762 Fax: 86-311-5815093 Participants: Pei Dong, You Maozheng Department in charge: Shijiazhuang institute of Agricultural Modernization, The Chinese Academy of Sciences Duration: 1996-2000 Research objectives: Based on the studies on the effects of water stress and stress level on growth and yield components and grain production of winter wheat and cotton to decide the deficit irrigation scheduling under different type of year in rainfall and irrigation water supply capacity. Research contents: (1) The reaction of winter wheat and cotton to water stress at their different growing stages; the afterwards effects after water stress and the complimentary effects of water deficit to growth and yield. (2) Patterns of water consumption under deficit irrigation for winter wheat and maize, the optimized water stress level at different growing stages of winter wheat and optimized allocation of limit irrigation water supply. (3) Agronomic practices with deficit irrigation. The major achievement: The deficit irrigation scheduling for winter wheat and cotton. Key words: Deficit irrigation, Water-stress, Winter wheat, Cotton. Funds: RMB 300,000