Development and the components of exudates and bleaching sap in the root of cucumber seedlings were examined to elucidate the response of the rhizosphere to CO2 enrichment treatments (one time in the morning and twice in the morning and afternoon).

為探討溫室蔬菜CO2施肥的根際效應(yīng)国内自拍第十六页日韩在线观看视频，以黃瓜幼苗為試材，研究了CO2施肥（上午施肥/上97欧美激情超碰一区二区、下午施肥欧美丰满熟妇XXXX性群菊；施肥濃度/對照濃度(950±50)/(350±50)μmol/mol CO2）對根系生長及分泌物和傷流液組成的影響。

Single-fertilizer effect models as well as 1 fertilization model and 3 balance fertilization parameters for the glebe experiment area are produced.

本研究在田間施肥量試驗的基礎(chǔ)上為水田試驗區(qū)配出了單一肥料效應(yīng)模型6個无码国产乱人伦偷精品视频，施肥模型1個一级欧美一级在线，平衡施肥參數(shù)3項；為旱田試驗區(qū)配出了單一肥料效應(yīng)模型6個毛片手机在线，施肥模型1個国产精品秒播无毒不卡，平衡施肥參數(shù)3項。

The contents of N, P, K in leaves were examined by regular leaf analysis. The results showed that the N content was higher in leaf blade than in leafstalk. N content in leaf was gradually reduced along with the vine growth. N, F, K fertilized at 20 to 40 cm soil layers significantly increased N content in leaf. But N content in leafstalk was less affected by N fertilization depth and growing season. P content was higher in leafstalk than in leaf blade. Less change of P content was noticed in leaf along with vine growth. However, N, P, K fertilized at 40 to 60 cm soil layers significantly promoted P in both leaf blade and leafstalk. K content in leafstalk was much higher than in leaf Wade. No obvious influence was noticed by fertilizing depth. But K content in leafstalk was significantly increased due to applied K fertilizer in late growing season.

結(jié)果表明十八岁禁看的黄色网站，釀酒葡萄葉片中氮含量遠(yuǎn)高于葉柄国产系列第一页，葉片中氮素含量隨著生育期的延長逐漸降低，而葉柄中氮含量隨施肥深度增加和生育期延長而產(chǎn)生的變化很小免费中文字幕WWW，40cm的施肥深度能顯著增加葉片中氮素含量对白露脸视频一区二区在线；葉柄磷素平均含量高于葉片，全生育期葉片磷含量變化很小网站懂得，而施肥60cm深度顯著促進(jìn)了葉片和葉柄中磷含量的提高超碰在线最新地址；葉柄中鉀含量遠(yuǎn)高于葉片，施肥深度對葉柄和葉片中鉀含量未產(chǎn)生明顯影響怕怕怕1000无档免费视频网站，但生育后期追施鉀肥顯著提高葉片鉀含量日本黄页网；施肥深度達(dá)到40cm時釀酒葡萄的產(chǎn)量最高，而60cm的施肥深度產(chǎn)量顯著下降加勒比精品在线。

The results showed that the grain yield of winter wheat with two-irrigation was higher than that with one-irrigation with the same nitrogen application rate and method. Compared to one-irrigation,the grain number per spike in two-irrigation was higher,the 1000-grain weight was lower, the water wastage was higher, but the WUE was lower. The yield was not affected significantly by nitrogen rates and the methods. Within the nitrogen rate of 157.5-295.5kg/hm2, the lower NUPE and Nitrogen Productivity declined with nitrogen rate increasing. NHI was not lower than the others at the lowest nitrogen rate of 157.5kg/hm2. The accumulation of NO3--N in soil was significantly and positively correlated with the nitrogen application rate. NO3--N in one-irrigation was distributed mainly in the top layer (0-80cm), but it was inverse in two-irrigation.

結(jié)果表明乱伦国产视频，施氮量和施氮方式相同時春澆二水冬小麥的產(chǎn)量高于春澆一水，二水穗粒數(shù)較一水高在线三区四区，千粒重則低于一水亚洲午夜理伦片，一水耗水量較少，水分利用效率明顯高于二水免费在线性爱视频网；同一水分下不同施肥量及施肥方式對產(chǎn)量的影響差異不顯著强奸网址，同一施肥方式下在157.5-295.5kg/hm2范圍內(nèi)，施肥量越大精品在线视频三级片，氮素生理效率和氮肥生產(chǎn)力越低最新国产色，施氮157.5kg/hm2時，氮收獲指數(shù)均處在最高或較高水平免费一级无码婬片AA片A片；土壤硝態(tài)氮殘留量與施氮量呈顯著正相關(guān)国产精品久久久厕所偷窥盗摄，成熟期一水條件下土壤中硝態(tài)氮主要集中在上層(0~80cm)，二水條件下則主要分布在中下層。

Fertilizing date presented obvious effects on root growth and distribution. Fertilization after watering was more primitive to the root in up-soil layers than before watering. Fertilization of Ca-Mg was positive to the increase of root in 5-15cm soil layer, but negative to that in the surface layer. Both fertilization date and Ca-Mg fertilizer affected root vigor obviously.

施肥時期對根系也具有明顯的影響中文无码在线视频伊人，與灌水前施肥相比激情国产手机视频在线观看，灌水后施肥有利于促進(jìn)根系在上層土壤中的生長和分布；鈣鎂肥的施用能增加5~15cm土層根重久久久轮奸视频，但對表層根的生長不利日韩精品爆乳蜜桃视频在线，施肥時期和鈣鎂肥施用與否對根系活力的影響也較大。

Computer aid cotton field nutrients regionalize management based on nutrients spatial interpolating and fertilizer recommendation system based on GIS were studied.

以新疆生產(chǎn)建設(shè)兵團(tuán)芳草湖農(nóng)場国产精品日韩在线观看最大、新湖農(nóng)場和81一级在线免费WWw、89團(tuán)為基地，通過多點分散肥料試驗建立了綜合施肥模型并對幾種施肥模型和模型參數(shù)進(jìn)行了研究清纯唯美色五月；應(yīng)用反射儀測定棉株硝酸鹽含量黄色网站网址入口，建立了棉花快速營養(yǎng)診斷追肥指標(biāo)；應(yīng)用農(nóng)田養(yǎng)分分析數(shù)據(jù)和相關(guān)農(nóng)業(yè)技術(shù)資料大粗鳮巴r人妻文，建立了芳草湖農(nóng)場GIS數(shù)據(jù)庫97碰碰碰人妻无码视频野外；建立了基于GIS、以綜合施肥模型為核心的棉田養(yǎng)分分區(qū)管理和推薦施肥系統(tǒng)www.344ya.com。

Using quadratic rotational regression combination design to study the influence on yield and economic characters in different fertilizer and density of the rape, the result showed that the influence of density and fertilizer on yield and active silique per plant were significant but the quantity and weight of seed, while the influence of density on active silique per plant was higher than that of fertilizer but on yield was contrary.

結(jié)果表明性爱无毒网页，在本試驗范圍內(nèi)，施肥量和密度對油菜單株有效角果數(shù)和產(chǎn)量均有顯著的影響色噜噜噜一二三区，對單株有效角果數(shù)的影響是密度大于施肥量玖性殴美，而對產(chǎn)量的影響則是施肥量大于密度；單株有效角果數(shù)的最佳組合為施肥量以純氮227.0kg/hm266夜色、密度9.4萬株/hm2，產(chǎn)量的最佳組合為施肥量以純氮235.7kg/hm2樱花草黄色一级视频、密度10.6萬株/hm2日韩www色在线视频；當(dāng)控制施肥量、密度分別為214.4—256.9kg/hm2com.在线久久特、10.1—11.1萬株/hm2時亚洲欧美日韩视频一区，油菜產(chǎn)量可達(dá)3000kg/hm2以上。

The result of fertilizer management of Sutian8 shows: what use the fertilizer of early stage handled, the plant height, ear height, stem thickness, leaf area etc. were better than early stage apparently, did not apply fertilizer to hand. Fertilized in lump sum on early stage, although expression was sent early for strong sprout, had also formed high-yield group, but later stage had the phenomenon of premature senility; Early stage did not be applied fertilizer, even if in late stage mend the fertilizer of equal quality could not also remedy. Corn ear output and quality would not raised unless the fertilizer applied at prophase (45%-60%), metaphase and anaphase had a certain proportion.

蘇甜八號不同時期肥料運籌試驗結(jié)果表明：施用前期肥的處理ww.黄色视频，無論是在株高爱情岛亚洲品质自拍网址进入入口、穗高、莖粗国产一级特黄大片色视频泰斯特、葉面積等植株性狀上影音先锋在线观看资源网，還是在果穗、產(chǎn)量性狀上均顯著優(yōu)于前期不施肥的處理免费毛片网址，前期一次性重施肥aaaa日韩，雖表現(xiàn)為壯苗早發(fā)，也形成了豐產(chǎn)群體，但后期有早衰現(xiàn)象久草av电影一区，前期不施肥欧美午夜aaaaaa，即使中后期補(bǔ)施同等數(shù)量的肥料也無法彌補(bǔ)因前期不施肥所造成摘要的影響，只有前114毛片、中91三级片在线、后按一定比例且適當(dāng)提高前期肥的用量(45%一6006)才有利于提高鮮果穗產(chǎn)量和商品品質(zhì)。

The difference in yield, its components, basic characteristics such as mean size and bare tip length of cobs, plant height, base internode diameter, secondary root number per plant, LAI and DMW at the same measuring date, between the three treatments were insignificant respectively; the optimized fertilization made the three leaves around corn cob rather smaller, the cob leaf slightly thinner, a decrease of the cob leaf chlorophyll content at greater rate at the later stage, and dry matter accumulation amount slightly reduced from flowering to grain filling.

在優(yōu)化施肥特级毛片A片全部免费网站、秸稈還田優(yōu)化施肥及傳統(tǒng)施肥條件下又大又硬AV无码中文，夏玉米穗長、穗粗国产高清肏屄AV、禿頂長国产亚洲中文一区二区在线观看、株高、基部伸長節(jié)間粗度日韩欧美啪啪一中文字暮、單株各層次生根條數(shù)亚洲一区网址、同一時期的葉面積指數(shù)和干物質(zhì)積累量無顯著性差異。在優(yōu)化施肥條件下日本久久枸一，夏玉米棒三葉總?cè)~面積略微減少青春小仙女jk白丝喷白浆，穗位葉葉片略微變薄，生育后期穗位葉葉綠素含量下降稍快黄色视频射了网站，吐絲-收獲的干物質(zhì)積累量略有下降免费视频A片在线。

Treatments were as follows: fertilization during leaf-expansion period, fertilization during green-leaf period, and no fertilizer. Results showed that individual leaf area, thousand-leaf weight, and leaf distribution were relatively stable with little influence from fertilization. Fertilization during leaf-expansion compared to the green leaf period significantly increased leaf number, leaf weight per plant, and leaf area index. Fertilization during led-expansion also significantly increased the total weight of leaves corresponding to each branch. The 14th to the 17th branches had the largest number of leaves in the canopy with fertilization increasing the weight of each branch but not changing the center of the canopy.

結(jié)果表明：毛竹單葉面積、千葉質(zhì)量和葉片分布受施肥的影響較小国内a片在线视频，是較為穩(wěn)定的指標(biāo)国产原创福利；展葉期施肥處理（處理1）能顯著增加單株立竹的葉片數(shù)量，到7月底亚洲美女操逼视频一区二区，其單株立竹葉片總質(zhì)量和葉面積指數(shù)分別比綠葉期施肥（處理2）提高14.8%和13.7%欧美又色又爽又黄的视频，比不施肥提高27.6%和24.5%；冠層14~17檔是單枝葉片數(shù)量最多的區(qū)域国产黄色网站马上看，施肥能增加各枝盤葉片的質(zhì)量看黄一级a片网站，但對林冠重心的分布無影響；單葉葉面積穩(wěn)定后（6月）99成年小黄片，處理1的葉綠素測定值和光合速率顯著高于處理2和對照欧美老妇肥婆毛多水多性强，而處理2與對照間無顯著差異。

fertilization：施肥

灌溉施肥(Fertigation)是將施肥(Fertilization)與灌溉(Irrigation)結(jié)合在一起的一項農(nóng)業(yè)技術(shù),它是借助壓力灌溉系統(tǒng),在灌溉的同時將由固體肥料或液體肥料配兌而成的肥液一起輸入到作物根部土壤的一種方法.

fertilizer supplication：施肥

硒肥:Selenium Fertilizer | 施肥:fertilizer supplication | 施肥:applying fertilizer

manurial experiment：施肥試驗

manure unity 堆肥單位 | manurial experiment 施肥試驗 | manuring 施肥

applying fertilizer：施肥

施肥:fertilizer supplication | 施肥:applying fertilizer | 硫肥:sulfur fertilizer

dunging：施肥的

失毒性毒素 anatoxin | 施肥的 dunging | 施肥量 amount of applied fertilizer

fertilizing：施肥

fertilizer application 施肥 | fertilizing 施肥 | F-horizon 發(fā)酵層

fertilizing method：施肥方法

fertilizing amount by field 田間施肥量 | fertilizing method 施肥方法 | fertilizing time 施肥時期

fertilizing time：施肥時期

fertilizing method 施肥方法 | fertilizing time 施肥時期 | fetilizer for tillering 蘗肥

fertilizing amount：施肥量

fertilizin 受精素 | fertilizing amount 施肥量 | fertilizing amount by field 田間施肥量

manuring：施肥

manurial experiment 施肥試驗 | manuring 施肥 | manuring requirement 要求施肥