annual effective yield 中文意思是什麼
annual effective yield
解釋
年實際收益-
The merits are : ( i ) earlier grinding and earlier annual entry to the market of new sugar products ; ( ii ) prolonging the grinding period and enhancing the work productivity and the effective utilization of equipment ; ( iii ) solving the conflict of lacking grinding capability with traditional concentrated harvest of raw sugarcane ; ( iv ) lower the quantity and quality loss from freeze injury of raw cane ; and ( v ) proper income increase of sugarcane growers due to the increases of both sugarcane yield and price
采納10月開榨配套技術可以使我國甘蔗糖廠提早10月開榨，使新糖提早上市搶市場，一定程度上克服我國糖廠榨季及產品相對集中的問題；延長榨季，提高設備利用率和勞動生產率，提高蔗糖業經濟效益；可一定程度上解決原料蔗產量增長過快與糖廠壓榨能力相對不足的矛盾；減輕可能的霜凍危害造成的原料蔗產量和質量損失。可以使蔗農通過單產提高和蔗價適度增加而提高收入。 -
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。 -
( c ) land natural productivity increase from 7843 kg / ( hm2 - a ) to 17335 kg / ( hm2 - a ) relate to altitude closely, and the mean rate of enhancing yield is 23. 53 percent in this region with annual enhancing - rate of 0. 64 percent in last 15 years. ( d ) there are many facters that have been influe ncing soil effective coefficient that ' s soil organic matter, total nitrogen, effective phosphine and soil texture in turn. in a word, attenuation cause of land productivity is the result of water and soil. ( e ) the forestland potential productivity change from 3986 kg / hm2 to 15034 kg / hm2, but it has a high distinction between southern aera and north area in yaan city. ( f ) the grassland potential productivity increase from 4085 kg / ( hm2 - a ) to 16973 kg / ( hm2 - a ), but it has a high classification of potential productivity, ( g ) ditribution map was formed of potential land productivity. ( h ) it could be act as decision support for agriculture development, national land planning and ecotop constructive, etc
5 、土地自然生產潛力水平的主要土壤限制因素為有機質、全氮，其次為速效磷和土壤質地；區域潛在生產力差異的制約因素，主要為土壤，次為水分，水、土兩項衰減合計為45 . 99 ，石棉、漢源兩縣水、土衰減達到60左右。 6 、林地潛力在3986 15034kg / hm ~ 2之間，高等級林地比重小，以大相嶺為界，北部的各縣林地生產力水平高，南部的兩縣林地生產力水平較低。 7 、天然草地生產潛力水平高，潛力在16973 4085kg / （ hm ~ 2 ? a ）之間，以高產的一、二、三級草地為主，且近10年來該比例變化不大。
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