If you are in a flood area, consider what mitigation measure you can do in advance.

假如你在淹水的區(qū)域，思考在淹水之前你可以采取哪些減災的工作国产视频33区。

The decomposition rate of organic matter in submersed is obviously larger than that of organic matter unsubmersed after input of nitrogen,suggesting hy...

在非淹水條件下日韩av一级免费在线观看网站，氮素輸入后有機物質的分解速率明顯大于淹水條件，說明水文條件和氮素輸入對枯落物的分解過程都有重要的影響欧美成αⅴ人在线视频，只是在不同環(huán)境條件下的響應存在一定的差異www热色com。

Water stress is one of the most important abiological stress to maize seedling .In this study, we arm to identify the sensitive stage of maize seedling to water stress and select the material which tolerance to flooding. And we use waterlogging tolerance index to identify the sensitive stage of maize seedling. we have studied 20 inbred lines of maize which seedlings under water stress in three stage. The result show that the three leave stage is the most obvious stage to flood stress. In addition, we have analyzed ten of the inbred lines to re-act the waterlogging tolerance index. The result show good re-action. And the result also show that waterlogging tolerance index is a credible index to select waterlogging tolerance materials in seedling.

澇漬是玉米苗期主要的非生物逆境脅迫之一；本試驗通過對20份玉米自交系進行苗期的淹水對照試驗AV野狼，采用了三個處理時期欧美大黑屄，并利用耐漬系數(shù)作為指標進行敏感時期的鑒定，結果表明三葉一心期是淹水的相對最佳時期大黑吊性爱；同時利用其中10份自交系對耐漬系數(shù)的重演性進行了分析九九精品国模私拍在线观看，結果表明其重演性很好；同時結果還表明耐漬系數(shù)是耐漬性鑒定的一個可靠指標av日韩免费网址。

Soil Science Department, Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, U.K., School of Earth and Space Science, University of Science and Technology of China, Hefei, Anhui 230026, China, and School of Biological Sciences, University of Aberdeen, Cruickshank Building, St. Machar Drive, Aberdeen, AB24 3UU, U.K.

在發(fā)表于8月1日出版的《環(huán)境科學與技術》的一篇論文中日韩孕妇自拍视频网站大全在线观看，英國洛桑研究所的趙方杰及其同事比較了淹水種植的水稻與旱作種植的水稻之間的砷水平，淹水種植水稻是南方國家最傳統(tǒng)的耕作方法手机黄网欧美高清，而旱作種植水稻則指的是不把水稻根部浸于水中的做法久久久丰满老熟妇。

Total submergence largely decreased biomass production and growth in length,with less effect on shoot numbers.Increased elongation of the growing internodes of up to 140% is caused by submergence.Nutrient such as N,P,K do significantly affect on growth.No mater lack of any element will decrease the biomass,the result same as the oligotrophic conditions.But lack of phosphorus is the worst mater.

而淹沒式淹水可能使生物量降低，但是植株的高度有所增加国产热情网站，因為淹水可以使蘆葦?shù)墓?jié)間高度提高140％欧美A片一级在线观看嗯啊；對根莖的數(shù)量沒有很明顯的影響。N色欲aⅤ、P第1页欧美高清视频看片在线观看网站、K等營養(yǎng)元素對蘆葦生長也具有重要的作用欧美永久视频免费，無論缺少哪一種對蘆葦生長都不利，跟完全貧營養(yǎng)狀態(tài)沒有明顯的區(qū)別毛片总合网，但是缺P時蘆葦生長是最差的欧美性爱三。

The overview discussed the 8 factors affected the survival rates, and the plantable tidal flats and the threshold of waterlogging time of mangroves seedlings. The different inundation classes of mangrove and the critical tidal level fits for mangroves forestation were summarized.

本文從影響紅樹林造林成活率的8種自然因子和人為因子出發(fā)，著重探討了灘面高程和臨界淹水時間男插女激情免费网址在线观看，并對國內外對紅樹植物潮汐淹水的等級的確定免费一级黄片视频，以及國內各地造林過程中的宜林臨界線的測定進行了綜述。

In this study, the responses of Spartina alterniflora in terms of the parameters of chlorophyll fluorescence and chlorophyll content to continuous waterlogging for two years and to restoring after continuous waterlogging for one year were investigated.

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The plant height (160 cm) and the amplitude of Deep water (50 cm) scenario were higher than Shallow Water (0 cm) scenario, while that of Draught (20% water content) scenario did not increase and some of the sedges died.

漂筏苔草無性株地上莖莖粗隨著淹水深度的增加而增加国产最新综合久久，生長季莖粗的變化主要發(fā)生在6月份黄色视频观看免费的黄色网站，其次是5月份和7月份，8月份莖粗變化微?国产免费。ㄔ?0cm淹水狀態(tài)下）欧美激情亚洲熟妇。

Soil solution samples were obtained by centrifuging fresh soil samples.

結果表明黄色视频在线观看看网站，淹水后土壤溶液中DOC濃度在淹水初期明顯增加，而后逐漸下降台湾亚洲综合色区。