irrigation conditions
1.Studies on the Change Characters of Grain Phytic Acid,Total Phosphorus,Protein and Minerals Contents in Two Oat Varieties under different Irrigation Conditions
2.Construction of Shapotou water conservancy hub in Ningxia, located in the Yellow River, can improve the irrigation conditions along the Yellow River in Ningxia, and improve the irrigation guarantee rate and water efficiency in the areas irrigated by the Yellow River.
3.The mission of the Conservation and Production Research Laboratory is to 1) develop improved water management methods and irrigation technology for sustaining or enhancing crop productivity, improving water use efficiency, reducing ground water use, and enhancing water and soil quality; 2) develop management practices that optimize the use of water, soil, climatic, and nutrient resources for economically and environmentally sustainable crop and livestock production systems under dryland and limited-irrigation conditions; 3) develop systems for utilizing renewable energy sources (wind, solar, and biofuels) for pumping irrigation, livestock, and farmstead water and generating electric power; 4) develop regimens that reduce environmental risks posed by accumulations of feedlot wastes by reducing the phosphorus content, improving nutrient utilization, and applying manure to grasslands.
5.Refers to areas that are effectively irrigated, i.e. level land which has water source and complete sets of irrigation facilities to lift and move adequate water for irrigation purpose under normal conditions.
6.The nec essary and the inportance to strengthen water saving irrigation are discaussed w ith the concrete conditions in this paper.
7.Hydraulic structures,velometers,weirs,and flumes are used to gauge water in many irrigation districts.The fundamental principles and suitable conditions of these water metering methods are introduced in this paper.The main problems in the development of water metering instruments and facilities as well as main causes of difficulty in popularization of the methods in irrigation districts are analysed.It is suggested that selection and construction of water metering facilities should be combined with canal lining in irrigation districts.It is also pointed out that for realization of automation of water metering it is necessary to develop and popularize portable and stationary water metering instruments step by step based on economic development levels in irrigation districts.
9.Trees happened premature decay and even die due to density too dense in deep forestation no irrigation.It is considered that thin construction were disposed in density of deep forestation no irrigation from tree biological ecology characters,forestation pattern,site conditions,water balance,auxiliary tree species and so on.
10.Article 15: All areas shall develop their irrigation, drainage and water and soil conservation work according to their water and soil conditions to promote stable and high agricultural yield.
