红外技术检测葡萄园分解.ppt

Grapevine Irrigation Management Management Webster’s Dictionary To handle or direct with a degree of skill To treat with care To alter by manipulation To achieve one’s purpose goal Irrigation ManagementNo More RDI! Grapevine Irrigation Management Grapevine Irrigation Management InfraRed and Air TemperatureMeasurement Objective: Simultaneous measurement of leaf and air temperature Supplement or replacement of pressure chamber Geolocation of data Fast ~ 10 seconds Grapevine Irrigation Management Grapevine Irrigation Management Grapevine Water Requirements When: budbreak to flowering 5% flowering to fruit set 15% fruit set to veraison 60% veraison to harvest 20% harvest to leaf fall dormancy 3-5% How much Irrigation: On a worldwide basis 0-30 acre-inches Grapevine Irrigation Management Developing an irrigation plan setting goals for your vineyard acquire information Eto, Kc, precipitation total and seasonal know your soils variability depth, profile, water holding capacity, infiltration rate This is the vines “water bank account” evaluate your water supply reliability, quality Plant water status Grapevine Irrigation Management Developing an irrigation plan cont. know your vines rootstock, root system general health nematodes, phylloxera, etc. understand the “banking system” deposits precipitation and irrigation withdrawals evaporation, transpiration bank charges bound water, deep percolation, impenetrable barriers Grapevine Irrigation Management Developing an irrigation plan cont. understand the “economics of water use” changes in seasonal withdrawals benefits or costs of low balance the ability to increase your bank balance timeliness quantity UNDERSTAND YOUR IRRIGATION SYSTEM Grapevine Irrigation Management THERE ARE NO SILVER BULLETS THIS IS A HIGHER LEVEL OF MANAGEMENT REQUIRES AN UNDERSTANDING OF THE ANNUAL CYCLES OF GRAPEVINE GROWTH, DEVELOPMENT AND PHYSIOLOGY GRAPEVINES ARE VERY TOLERANT OF WATER STRESS NIR SPECTROSCOPY