Sabaigrass had long time for vegetative growth and required enough nutrients, so fertilization can promote growth significantly.

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The study results indicated: The growth and output of the Sabaigrass was in orderon condition that soil holding water ratio was between 70% and 80%. The segregatingbranch of Sabaigrass have not grow rapidly in the procreative period when the soilheld higher(90～100%) or lower water (40～50%), and in August the death ofsegregating branch appeared.The growth of laminae was also impacted, the quantityor length of laminae, even shorter than 80cm. Finally with the result that the outputdecreased evidently.In June, the nutrition blooms in this time, the growth ofsegregating branch of Sabaigrass was affected by the field waterlogging, the caudexand segregating branch were half less than in the normal condition.

如果土壤含水量過高(90～100％)和過低(40～50％)欧美一级A片直播，龍須草整個生育期沒有分蘗快速增長的現(xiàn)象，進(jìn)入8月份摸摸日日，甚至還出現(xiàn)分蘗死亡的現(xiàn)象无码毛片视频一区二区无码，葉片的生長也受到很大影響免费在线视频青青无码，葉片總數(shù)極顯著地減少2021国产精品免费观看，葉片的長度縮短，長于或等于80cm的葉片根本沒有，最終導(dǎo)致產(chǎn)量顯著降低色色网页免费看；尤其是在6月份龍須草營養(yǎng)旺盛生長的時期加勤比视频，大田淹水極大地影響龍須草的生長，抑制分蘗的發(fā)生我想看免费一级黄片，收獲時龍須草的總莖蘗數(shù)只有正常的一半最新国产小视频。

The rate of 35 S2- formation greatly increased with incorporating sesbania and rice straw or with flooding of soils.

S￣（2－）的生成速率隨施用田菁和稻草以及淹水而增加。

Through simulated soil dynamic submergence in the hydro-fluctuation belt of the Three Gorges Reservoir Region,four different kinds of water treatment were applied to examine the mechanism of the nutrient changes in soils of Taxodium distichum seedlings.

三峽庫區(qū)消落帶土壤淹水的周期性常年變化色99色网站，勢必影響到土壤營養(yǎng)元素含量a∨在线视频、土壤肥力、土壤理化性質(zhì)等土壤特性的變化(PonnamperumaA片视频网站在线免费观看，1972日韩精品导航大全视频在线播放免费；李其林等，2004精品浮力影院一区二区；楊剛嗯一毛片黄片操逼片，2004)，但土壤營養(yǎng)元素含量的影響是導(dǎo)致土壤其他特性發(fā)生相應(yīng)變化的根本原因之一(金為民中国黄色网站在线播放，200381色色色；岳慶玲等，2007)日本三级欧美三级人妇视频。

Their half lives were 27.29 and 69.16 days respectively. Monocrotophos degraded into both methanol extractable and unextractable residues in the submerged soil.The analysis of 14C-methanol extractable. residue by TLC and ARG indicated that degraded products of monocrotophos were triether phosphate,;N-de-methyl Azodrin, O, O-dimethyl-vinyl-phosphatc,O-demethyl Azodrin,and O, C-demethyl Azodrin.The principal degraded extratable product of monocrotophos was triether phosphate, which incresed from 5% of the parent solution of monocrotophos to a range of 28-83%, furthermore and its degradation process was much faster in the unterilized soil than in the sterilized soil.

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Two techniques were compared that uses the UV absorbance at 280nm of 0.5mol/L K_2SO_4 extracts of fumigated and unfumigated soils and fumigationwaterlogged incubation to estimate the concentrations of nitrogen in the SMB.

用氯仿熏蒸-0.5mol/L的K2SO4直接浸提，280nm紫外比色法和熏蒸-淹水培養(yǎng)法測定了20種有機質(zhì)影音先锋国产一二三区资源、全氮和速效氮差異較大的土樣的土壤微生物量N无码黄色网。

The aim of the study was to discuss the physiological change law in Vetiveria zizanioides under waterlogging stress.

探討淹水脅迫下香根草體內(nèi)的生理變化規(guī)律。

Inundation ;transpiration rate;water use efficiency ;photosynthetic active radiation ;CO2 doubling;sexual-reproductive Vetiveria zizanioides

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His paper focus to research that how Tr and WUE of sexual-reproductive Vetiveria zizanioides under inundation respond to photosynthetic active radiation and CO2 concentrations doubling, we used LI-6400 Portable Photosynthesis System.

使用LI-6400便攜式光合作用系統(tǒng)研究了淹水條件下有性繁殖香根草蒸騰速率和水分利用效率等光合生理生態(tài)參數(shù)對有效光輻射增強和CO2倍增的反應(yīng)人人看人人草人人搞人人鲁人人插。

The number and length of aerating roots increased with the increase of waterlogging time.

較長時間的淹水可促進(jìn)貯氣根的數(shù)量增加和長度的增長。