high-yield grass 中文意思是什麼
high-yield grass
解釋
高產草-
The correlation analyses were conducted for the rations between the vegetation indices and the sampled grass yield data which were taken as the grassland biomass quotas. the results indicated that there are quite high correlations between the vegetation indices and the grassland yield data. among them the rvi has the highest correlation coefficient, ndvi in the next, and then successively tvi, msavi, infrared index, savi, gvi, dvi and w vi, but bvi has the lowest correlation coefficient that there is a negative correlation coefficient between bvi and the biomass
對各種常用植被指數和草地生物量進行相關分析，由分析結果得出，比值植被指數（ rvi ）與草地生物量的相關性最高，相關系數達到0 . 885 ，其次為ndvi ，然後依次為tvi 、 msavi 、紅外指數、 savi 、 gvi 、 dvi和wvi ，而bvi與草地植被生物量呈負相關關系，且相關性最低，總的來說，遙感植被指數和草地生物量具有較好的相關關系，因而，利用植被指數來建立草地生物量監測模型是可行的。 -
The results showed that the best water management pattern of fuji apple orchard was wheat straw mulching under low annual precipitation and grass planting under high annual precipitation. the comprehensive analysis was carried out on effects of different water management patters on yield of fuji apple, soil water conservation and soil organic matter of fuji apple orchard, growth in various stages and fruit quality of fuji apple under different annual precipitation
結果表明，在乾旱年份，紅富士蘋果園水分管理模式以秸稈覆蓋方式最佳，在多雨年份，紅富士蘋果園水分管理模式以果園種植白三葉草方式最佳；並綜合分析了不同降水年型不同水分管理模式對紅富士蘋果產量的影響，不同水分管理模式對果園土壤含水量和土壤有機質的影響及不同水分管理模式對紅富士蘋果生長狀況、外觀品質、內在品質的影響。 -
The annual yield of grass carp covers 20 % in total output of the fresh water fish, which is fast growing and tastes delicious, besides, the forages of grass carp are various, with a lower cost of raising, however, at present, the serious diseaes of grass carp results in a lower survival rate 10 - 15 %, which cause more then billions yuan economic losses per year to the fresh water cultiuation, especially, hemorrhagic virus of carp lasts for a long period of time and features a high death rate, therefore, it " s a woed - wide problem for the aquacultural scientific researchers to discover an effective settlement, which is still under the discussion
其生長快、飼料來源廣、飼養成本低和肉味鮮美。但草魚病害多，危害嚴重，目前草魚由苗種養至成魚的成活率僅為10 - 15 ，每年給我國淡水養殖業造成數億元經濟損失。特別是病毒性的草魚出血病，流行季節長，發病死亡率高，因此，對草魚出血病的有效防治一直是世界各國水產科學工作者艱苦探索而又未能找到理想解決辦法的世界性難題。
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