irrigation requirement
2.The re search result indicates that ANN model is better to reflect the complex non-lin ear relationship between the monthly end reservoir level and the influencing fac tors such as the monthly elementary reservoir level, monthly reservoir discharge , monthly irrigation requirement, and the result of the reservoir real-time dis patching is close to the average annual optimum situation.
3.nicro-irrigation is developed. This system integrated with Visual Basic, AutoCAD, Microsoft Excel and other software. Based on the requirement of micro-irrigation, and with the using of VB in visually programming, CAD in drawing and Excel in table calculating, the automatic design for micro-irrigation can be easily achieved by this system.
4.In order to provide foundation for making scientific irrigation schedule and heighten the water use efficiency,the advantage of BP network and wavelet analysis is integrated to establish a wavelet BP network model for predicting water requirement of rice.
5.The Establishment of the On-the-job Training System at the Requirement of Drainage & irrigation Industry --Pondering over 15 years training practice of FTS in JSUST
6.The total water requirement daring the entire growth period was influen- ced by irrigation, when being irrigated one, two and three times the total reached 297.27—310.66,363.26 and 372.82 cubic metres/mu respectively while 272.74 cubic metres/mu for the non-irrigated.
7.In this paper,the author evaluates several kinds of computing crop water requirement methods through analyzing its accurate and applicable condition,compares Modify Penman with Penman Monteith Formula which are both the main mathematical models that FAO recommended to compute crop actual evapotranspiration,then discusses defect in drawing out irrigation schedule by field capacity. At last introduce a new way by means of using computer software Spreadsheets to replace conventional BASIC program working out irrigation schedule.
