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  • 《农业农村部:2025年全国农作物 耕种收综合机械化率达到75%》
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  • 《农业农村部:2025年全国农作物 耕种收综合机械化率达到75%》

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  1. Krill Fishery Report 2017

    of no less than 50% of vessels during the 2016/17 and 2017/18 fishing seasons; no less than 75% of vessels ... is 10%. 2. Choose a yield, γ2, so that the median escapement at the end of a 20-year period is 75 ...

    Document : Site Section: Publications

  2. Krill Fishery Report 2018

    of no less than 50% of vessels during the 2016/17 and 2017/18 fishing seasons; no less than 75% of vessels ... period is 75% of the median pre-exploitation level. 3. Select the lower of γ1 and γ2 as the yield ...

    Document : Site Section: Publications

  3. Status of the krill stock around Elephant Island in 1991/92 and 1992/93

    fishery resources. FAO Fish. Tech. Pap., 171: and status of the krill stock in Antarctic 1-75. Peninsula ... ST-43 ST-27 ST-30 ST-60 ST-75 Figure 2: Examples of dendrograms from cluster analyses using ...

    Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 7–33 : Author(s): Loeb, V. and V. Siegel

  4. The effects of monitoring procedures on Adélie penguins

    -recaptured birds banded for two years compared with the range of 72 to 75% for those tagged or banded ... of the biology of Adelie penguins (Pygoscelis adeliae). Proc. N1PR Symp. Polar Biol., 6: 62-75. Kerry ...

    Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 155–164 : Author(s): Clarke, J. and K. Kerry

  5. Calibration of an acoustic echo-integration system in a deep tank, with system gain comparisons over standard sphere material, water temperature and time

    to the EK500 through a 50 m towing cable, a 13-conductor slip-ring set, and a 75 m deck cable. The acoustic ... . Am., 75 (2): 612-616. FOOTE, K.G., and D.N. MACLENNAN. 1984b. Use of elastic spheres as calibration ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 127–144 : Author(s): Demer, D.A. and R.P. Hewitt

  6. Myctophids in the diet of Antarctic predators

    % by weight ofmyctophids. Fish comprised at about 75% (73.3 to 77.9%) of its diet. The diet ... November 1986 to January 1987 comprised mainly of crustaceans (75.2% by number) and fish (22.2% by number ... % by number and about 75% by weight of the fish portion of the diet (Croxall and North, personal ... waters off the Australian Antarctic Territory, Heard and Macquarie Islands. ANARE Research Notes 75: 13 ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 335–368 : Author(s): Sabourenkov, E.

  7. Consideration of major issues in ecosystem monitoring and management

    3 75–85 70 30 Table 3: A comparison of the levels of survivorship required at different times ... to maturity to maintain population ~75% ~5% Age at first maturity 5–6 years 2–3 years Survivorship from ... juvenile to maturity ~75% ~70% (assuming M = 0.4) Survivorship egg to juvenile ~50% ~0.3% Everson 224 ...

    Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 213–232 : Author(s): Everson, I

  8. An impact assessment framework for bottom fishing methods in the CAMLR Convention Area

    d s et : B ac kb on e 32 6 67 1 32 6 67 1 00 0 32 .7 43 5 82 6 0. 00 75 ... °E 160° E 170°E 180° 170°W 160°W 150 80° S 75° S 70° S 65° S 60° S 600-1800 200-600 60-200 20 ... ° E 170°E 180° 170°W 160°W 150°W 60° S 65° S 70° S 75° S 80° S 203 Impact assessment framework ...

    Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 195–210 : Author(s): Sharp, B.R., S.J. Parker and N. Smith

  9. Fishery Report: Exploratory fishery for Dissostichus spp. in Subareas 88.1 and 88.2

    22 19 69 69 UK Argos Froyanes 46 43 53 75 UK Argos Georgia 55 65 47 69 Uruguay ... Froyanes 31 54 54 75 UK Argos Georgia 56 * 50 Uruguay Ross Star 10 64 68 ... steepness (Beverton-Holt) h 0.75 Ageing error (CV) 0.1 Initial tagging mortality 10 ... deviation of 0.6 with a Beverton-Holt stock-recruitment steepness h = 0.75. 61. For the Ross Sea, future ...

    Document : Site Section: Publications

  10. Volume 12: CCAMLR. 2000. Statistical Bulletin, Vol. 12 (1990–1999). CCAMLR, Hobart, Australia.

    Document : Site Section: Publications

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