water storage in soil and that in litter were 156.54 mm、23.63 mm and 7.92 mm respectively. Taking up to 36.11%,5.45% and 1.83% of the precipitation respectively.
Evapotranspiration,water storage in soil and that in litter were 156.54 mm,23.63 mm and 7.92 mm respectively,taking up to 36.11%,5.45% and 1.83% of the precipitation respectively.
The water total storage and water storage of 0~40 cm soil layer in mixed plantation were 12.4%,22.7% higher than those in pure plantation and wild land.
The stored water of the plantations was all decreased at the end of the growing season compared with that at the beginning, P. tabulaeformis, P. sylvestris var. mongolic and C. microphylla decreased by 17 mm, 8 mm and 73 mm respectively. More water was consumed by C.
At the initial growth stage of 5th, 10th, 15th year, soil water-storage capacity of 0 - 500 cm enhanced 82.84 mm, 56.63 mm, 210.66 mm respectively compared to CK, while in the final stage, enhanced 15.96 mm, 67.64 mm, 50.36 mm respectively.
Through actual examination on the data of 1992 and 1993, the calculated values are in agreement with observated ones, the relative error being less than 9%. Based on the calculated values of precipitation and the effective soil water-storage capacity after harvest,mathematical models for forecasting soil moisture regime during spring sowing period areestablished, and soil moisture indices suited to spring sowing conditions are discussed.
According to different crop, different regions, climate and crop of different periods, the system can judge whether the amount of water stored of farmland and soil drops to the lower limit index that the crop pours water and confirm quantity of irrigation and fertilization.
This paper introduces two operational models in the ice storage air conditioning system, whichs are the water cooled chillers priority and the ice storage priority, the choice method of refrigeration unit, the computing method of the amount of water stored and the disposition of the ice storage system.
According to different crop,different regions,climate and crop of different periods,the system can judge whether the amount of water stored of farmland and soil drops to the lower limit index that the crop and confirm quantity of irrigation and fertilization. In the end,irrigating and fertilizing can be finished automatically.
Specific features of the electrochemical determination of arsenic and its spatial distribution in the Upper and Central Ob and in the Novosibirsk water storage basin were considered.
If the commencement of water storage after the flood season is moved forward by 20 days, the amount of power generation can be increased by 3400 GWh per year.
If the commencement of water storage is moved forward while the maximum water level allowed in the flood season is raised, the amount of power generation can be increased by 6400 GWh per year.
To preserve stored water samples, a method for quantitative separation of arsenate at high pH-values with the basic anion-exchange resin Dowex 1×8 was developed.
A third way of estimation is from measurements of turgor changes and cellular water-storage capacity using the pressure probe, cytomorphometry and the Scholander pressure chamber.