Aqueous extract of cotton has allelopathic effect on Raphanus sativus, Brassica campestris, Lactuca indica, Brassica campestris, Echinochloa crusgall, Setaria viridis and Abutilon theophrasti and its inhibition effect gradually strengthens with increasing concentration. Aqueous extracts from stems, leaves and roots of cotton inhibit or accelerate seed germination and seedling growth, and activity of enzyme of seedling root of cotton. While aqueous extracts from stems and leaves of cotton are 0.02 gmL^(-1), root length, shoot length, lateral root number and dry weight of cotton respectively increase by 10.3%, 3.1%, 22.9% and 2.4% over the control. The above mentioned indexes are lower than the control by 34.4%, 39.2%, 40.6% and 19.0% respectively as the aqueous extracts are 0.1 gmL^(-1). At the same time, root activity and SOD activity decrease by 38.2% and 36.7%, while POD activity and MDA content increase by 52.3% and 36.5%. Growth indexes of plant receptors increase at low concentrations but decrease at high concentrations of aqueous extracts. The allelopathic effect of aqueous extract of stems and leaves is stronger than that of root.

結(jié)果表明：棉花植株水浸提液對蘿卜、白菜超污国产黄网站在线观看、萵苣最广黄色网站免费进入、油菜、稗草毛片网站能看的、狗尾草、苘麻均具有化感效應(yīng)狼友网免费卡，隨著作用濃度增加最新囯产福利在线观看精品，抑制效應(yīng)逐漸加強；棉花莖葉和根系水浸提液對棉花種子萌發(fā)欧美又粗又硬又长又爽、幼苗生長α片一区、幼苗根系活力、根系酶活性有抑制或促進(jìn)作用一级毛片一级毛片一级毛片大全，當(dāng)莖葉浸提液濃度為0.02 gmL^(-1)時91亚洲高清视频在线，棉花根長、苗高国产免费小视频、側(cè)根數(shù)国产在线视频欧美、干重分別比對照增加10.3%、3.1%成人网站香草视频在线观看免费、22.9%和2.4%欧美一级黄色黑人操黑人，當(dāng)濃度為0.1 gmL^(-1)時，上述指標(biāo)與對照相比分別降低34.4%欧美多人群p在线观看、39.2%欧美亚洲愉拍自拍激情另类、40.6%和19.0%，而根系活力三级黄片a、SOD活性比對照降低38.2%AVwww在线观看、36.7%，POD活性自拍亚洲国产、MDA含量較對照增加52.3%和36.5%久章草在线精品视频欧美九狼，不同濃度棉花植株水浸提液對棉花生長呈現(xiàn)&低促高抑&的規(guī)律，且莖葉浸提液作用效應(yīng)大于根系浸提液一级毛片无码不卡直接观看。

Fig.4 Comparison of distribution for RADR of root number, root length, seedling height and total r elative alkali damage rate at early seedling stage under different Na2CO3 concentration

圖4 不同濃度的 Na2CO3脅迫下国产精品综合久久久久久久免费，水稻幼苗前期根數(shù)的相對堿害率和綜合相對堿害率的分布比較

Seedling or cuttage seedling estivate , 10 days are chased after apply fluid fertilizer Old plant estivate can be applied less or do not fertilize .

幼苗或扦插苗度夏，10天追施一次液肥黄色视频高清免费在线观看网站；老植株度夏可少施或不施肥外国毛片931网站。

We studied the influence of seed size on germination, seedling growth, and seedling responses to light in Ligularia virgaurea, a clonal herb native to the Qinghai Tibet Plateau.

以高寒草甸克隆植物黃帚橐吾為實驗材料，通過遮蔭網(wǎng)模擬植被遮蔭长沙卓海数字技术有限公司，研究種子大小與萌發(fā)及幼苗生長能力的關(guān)系和幼苗對光照條件的反應(yīng)色哟哟网站十区。

Seed germination and seedling growth of Lolium perenne were improved observably, but at the higher concentration of Pb (500~2000 mg/kg), seed germination and seedling growth were restrained distinctly.

通過土培實驗研究了在單－因素影響下最色A片视频，不同濃度的Pb對黑麥草種子萌發(fā)及幼苗生長的影響，同時測定了其抗性生理指標(biāo)的改變以及地上部分和根系對Pb的富集作用精品久久久久一级毛片。

In addition, both the moisture content of the mature and seedling of Sparus macrocephalus and the fat content of seedling of Sparus macrocephalus increased with the growing of feeding frequency, whereas the fat content of mature Sparus macrocephalus decreased with the growing of feeding frequency.

2黑鯛成魚和魚種的水分含量隨飼喂頻率的增高而增加久久久久久精品，黑鯛成魚脂肪含量隨飼喂頻率的增高而下降，黑鯛魚種脂肪含量隨飼喂頻率的增高而增加97无码免费人妻超级碰碰碰。

In the mean time, it benefits microorganism decompose organic matter, aged algae, uneaten food and other hazardous substances; transfer them to new nutrient elements then re-promote the sustained and steady growth of monoplast algae; supply fish, prawn seedling sufficient natural live food; improve survival ratio and growth rate of fish and prawn seedling, cut down the cost of cultivation etc.

該產(chǎn)品為浮游單細(xì)胞藻類提供均衡且全面的營養(yǎng)元素十八以下静止观看的网站，使單細(xì)胞藻類快速生長；同時91国内精天天，有益微生物分解有機質(zhì)日韩人妻无码免费视频一二区色、老化的藻類及殘餌等有害物質(zhì)，轉(zhuǎn)化成新的營養(yǎng)元素循環(huán)提供單細(xì)胞藻類持續(xù)穩(wěn)定的生長亚韩色欧另类欧美在线影院；為魚最新男女一级性爱视频在线、蝦幼苗提供充足的天然活餌料，從而提高魚日韩午夜Aⅴ、蝦苗的成活率及生長速度九一高潮视频国产在线，降低養(yǎng)殖成本等。

They all presented a significant positive correlation with light availability. The relationships between seed mass and seedling emergence rate, seedling survival rate and overwinter survival rate were altered by the microsites change.

幼苗出土率日韩一级AV不卡毛片完整版、存活率激情与图片小说、越冬率均與光照強度呈顯著的正相關(guān)關(guān)系，而與種子大小的相互關(guān)系則隨著生境差異發(fā)生了變化国产精品网站在线。

The treatment of 37.3% NS was best for established seedlings in seedling height, basal stem diameter, paripinnate number, rachis length, the maximum sub-leaflet number of individual paripinnate, leaf area per seedling, relative growth rate and net assimilation rate.

生長早期的幼苗基徑和復(fù)葉數(shù)隨遮蔭程度的增加而降低插女人下面；主根長、根冠比国内自拍与偷拍、總干重和單株葉面積均以37.3％NS處理最大日韩手机自拍无码专区；比葉面積隨遮蔭程度的增加而增大，而相對生長率則降低欧美人性交精品A片在线观看；幼苗株高在0.6％NS下增長最快操屄无码，表明種子中貯藏的營養(yǎng)物質(zhì)對幼苗的早期生長可能具有重要作用。37.3％NS處理對定居后絨毛番龍眼幼苗的生長最有利国产精选自啪，幼苗的株高欧美丰满熟妇性XXXX、基徑、復(fù)葉數(shù)av在线播放免费精品、葉軸長麻豆高中生第一次破处、復(fù)葉最多小葉數(shù)、單株葉面積裸体美女视频一区二区三区、相對生長率和凈同化率均在37.3％NS處理下獲得最大增長色区综合色区视频无码系列；幼苗總干重隨光照強度的減弱而降低；比葉面積在15.5％NS處理時最大XXXXHD免费视频。

In order to make clear the Pchlide reduction mechanisms of early development of plant seedling, the changes of Pchlide and Chlide during early development of the seedling of Phaseolus radiatus under different treatments using light and antibiotics were analyzed.

為了探討被子植物幼苗發(fā)育初期Pchlide還原機制天堂在线欧美WWW，本文采用不同波長的光照和抗生素處理天堂毛片网，分析了光照誘導(dǎo)綠豆黃花幼苗發(fā)育初期Pchilde和Chlide的變化以及抗生素對Pchlide和Chlide的變化的影響。