A growth experiment was carried out at different densities (5 ind/144 L, 10 ind/144 L, 20 ind /144 L and 40 ind /144 L,denoted by Group 1,Group 2,Group 3 and Group 4) to investigate the effect of density on the growth rate and food utilization efficiency of hybrid tilapia (Oreochromis niloticus♀×O. aureus♂) .
During generational period,the quantity of the water consumption is between 767.2 mm and 933.5 mm,and the utilization efficiency is the highest,if the water exceeds 950 mm or under 510mm,the utilization efficiency reduces evidently.
When the Pb concentration was 250 mg·kg -1 , the net photosynthetic rate and water use efficiency of K0883 were increased by 121.80% and 193.70%, respectively, while its intercellular CO_2 concentration was decreased by 42.76%.
The water storage of soil and the water utilization ratio were increased due to the preservation of precipitation in field was rasied by mulching with film. It was beneficial to the growth of crop, the maize production and the WUE increased by 1488.0kg/hm 2 and 3.45, 4.65kg/(mm·hm 2) respectively.
The result showed that the yield of corn and utilization ratio increased with the increasing amount of water supply. The sequence of limited water supply effects were: dalaba stage >jointing stage>front sowing>seedling stage, with the efficiency of 106.6, 93.3,90.3,74.2 kg/(mm·hm 2).
Diurnal Course of Gas Exchange and Water Use Efficiency of Platycladus orientalis in the Semiarid Region of the Loess Plateau
Water use efficiency culminated in the early morning.
Foliar Carbon Isotope Composition (δ13C) and Water Use Efficiency of Different Populus deltoids Clones Under Water Stress
Foliar carbon isotope composition (δ13C), total dry biomass, and long-term water use efficiency (WUEL) of 12 Populus deltoids clones were studied under water stress in a greenhouse.
In group T1, the seedling of baldcypres had lower apparent light use efficiency, lower apparent CO2 use efficiency and a lower net photosynthetic rate, with the net photosynthetic rate 24.9% lower than that of group CK.
The dependence of the utilization efficiency on the high-frequency power, the magnetic-field strength, and the target material is studied.
By using the linkage map of this population, the QTLs for relative dry weight, relative P content and relative P utilization efficiency have been located.
One micro-effect QTL has been found to be associated with relative P utilization efficiency.
These rssults suggest that the change of GS activity in rice roots may use as a measure of the utilization efficiency of the fertilizer.
Among the six levels of propionate, 3.84 g/L was found to be the optimum propionate concentration for H2 production in terms of substrate utilization efficiency, H2 percentage, cumulative H2 production, and H2 yield.
The approximate resolution provides nondegradable values of the utilization ratio of processors and data exchange channels, and the conditionally optimal resolution provides extremal ones.
The equations were used to analyze the effect the density of current through the fuel cells and the fuel utilization ratio in them have on certain technical characteristics of the hybrid power station.
The utilization ratio of carbon can be improved by multi-cylinder CVD process without changing the characteristics of brake disc.
There was an inverse correlation between SvO2c and arteriovenous oxygen content difference (Ca-vDO2c) (r=-0.82), and a marked inverse correlation to the calculated oxygen utilization ratio (r=-0.97).
The utilization ratio of canal systems is 42%, and farmland use is 0.8.