[其他語言學(xué)習(xí)]基于價值鏈的預(yù)算管理研究(編輯修改稿)
2025-02-12 06:03 本頁面
【文章內(nèi)容簡介】 k28739。/span br / 參考文獻 24br / 致謝 25br / p class=39。Aak28739。/p /pP/P p加入 WTO前后我國糧食貿(mào)易的對比分析 (字 )br / 摘要：我國的農(nóng)業(yè)是國民經(jīng)濟的基礎(chǔ)，糧食是基礎(chǔ)的基礎(chǔ)。當前，我國加入 WTO已有 10年，過渡期已基本結(jié)束，為了更好的認識加入 WTO給我國糧食貿(mào)易帶來的影響和沖擊，并制定有效政策予以應(yīng)對，我們有必要對加入 WTO前后我國糧食貿(mào)易的情況進行對比分析，本文將從四個方面著手對我國入世前后糧食貿(mào)易進行對比分析：一是簡述入世前我國糧食貿(mào)易的概況及特征分析； 二是描述入世后我國糧食貿(mào)易的現(xiàn)狀及特征分析；三是深入對比分析入世后我國糧食貿(mào)易中存在的新問題；四是針對我國入世后糧食貿(mào)易出現(xiàn)的新問題提出有效的建議。 br / 關(guān)鍵詞： WTO；糧食貿(mào)易；國際競爭力；貿(mào)易格局； br / br / Study on Before and After Joining the WTO in Chinaamp。rsquo。s Grain Trade and the Comparative Analysisbr / Abstract: Our countryamp。rsquo。s agriculture which is based on the national economy, grain is the most important status on the national economy. At present, China39。s joining to WTO for 10 years, and the transition period has been pleted. In order to understanding the impact of grain trade after joining the WTO, and to developing effective policies to deal with questions. Itamp。rsquo。s necessary to parative analysis the affect on our grain trade before and after joining in the WTO , the paper will be from four aspects to pared analysis before and after joining in the WTO: First, China39。s grain trade before the WTO brief overview and feature analysis. Second is to describe the WTO and the status of China39。s grain trade analysis. Thirdly indepth parative analysis of food trade in China after WTO new problems. At last, China39。s accession to the WTO for trade in the new problems of food to propose effective remendations. span class=39。Rls95839。/span br / Key words: WTO； Grain trade； International petitiveness； Trade patternbr / P/P p摘 要：本文測定了扶桑綿粉蚧（ Phenacoccus solenopsis Tinsley）若蟲孵化時間與溫度變化關(guān)系，扶桑綿粉蚧若蟲孵化率與溫度變化關(guān)系，扶桑綿粉蚧若蟲歷期與溫度變化關(guān)系及扶桑綿粉蚧雄雌蟲分化與溫度變化關(guān)系。結(jié)果顯示，扶桑綿粉蚧若蟲孵化時間與溫度升高成反比，隨溫度由 15℃ 30℃逐漸升高，若蟲完全孵化時間由 4h減少到 3h；扶桑綿粉蚧若蟲孵化率與溫度升高成正比，若蟲孵化率由 ％增加到 ％；扶桑綿粉蚧 若蟲歷期與溫度升高成反比，若蟲歷期總天數(shù)由 32d減少到 19d；扶桑綿粉蚧雄蟲占蟲口數(shù)百分比與溫度升高成正比關(guān)系，雄蟲占蟲口數(shù)百分比由 ％增加到 ％。 br / 關(guān)鍵詞：扶桑綿粉蚧；生物學(xué)；孵化率；雌雄分化； br / br / biological characteristics of Phenacoccus solenopsis Tinsleybr / Abstract: This article has determined the nymphae hatching time and the temperature change relations, nymphae hatching rate and the temperature change relations, nymphae experience time and the temperature change relations, male differentiation and the temperature change relations of Phenacoccus solenopsis Tinsley. The result showed that Phenacoccus solenopsis Tinsley nymphae hatching time and temperature increment are in reverse proportion, by 15℃ 30℃ elevates gradually along with the temperature, the nymphae hatches the time reduce from 4h to 3h。 nymphae hatching rate and temperature increment are proportional, the nymphae hatching rate increases from % to %。 nymphae experience time and temperature increment are in reverse proportion, the nymphae experience time total number of days reduces from 32d to 19d。 Male and female differentiation and temperature increment is proportional the relations, by 15℃30℃ elevates gradually along with the temperature, Male accounting from % to increase % of the total. p class=39。Scu78539。/p br / Key words: Phenacoccus solenopsis Tinsley 。biology。 hatchability。 differentiation of male and femalebr / br / br / 目 錄 6500字 br / 摘 要 1br / 關(guān)鍵詞 1br / 1 前言 2br / 分類地位 2br / 研究現(xiàn)狀 2br / 研究目的 2br / 2 材料與方法 3br / 供試蟲源 3br / 實驗準備 3br /
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