plant density 中文意思是什麼

plant density 解釋
植物密度
  • plant : n 1 植物，草木 （opp animal）; 草本；〈商用語〉樹秧，苗木。2 莊稼，作物，收獲；（植物的）生育。3 ...
  • density : n. 1. 稠密；濃厚。2. 【物理學】濃度；密度；比重。3. 愚鈍，昏庸。
  1. The results showed that plant height, crown breadth, leaf number, leaf breadth and sporophyll number of dryopteris crassirhizoma populations were influenced by forest crown density and light condition

    結果表明：林分郁閉度和光照條件顯著影響粗莖鱗毛蕨種群的株高、冠幅、葉片數量、葉片寬度、孢子葉數等形態指標。
  2. In this research, the plant esterase of wheat and - ethanoic acid naphthalene ester were taken as materials to inspect the relation between the wheat esterase and the organic phosphorus, ten linearity equations were established which expressed the esterase vigor and the organic phosphorus density logarithm with the change of the numerical value of ultraviolet resorption, and the monotony range and the extremum of the function were confirmed

    摘要本研究以小麥為植物酯酶的酶源， -乙酸萘酯為底物，考察了小麥酯酶與有機磷農藥之間作用的關系，建立了10個以吸光值變化表示的酶活性與有機磷農藥濃度對數之間的線性方程，並確定了函數的單調區間和極值。
  3. The great bustard is polyphagia bird, but it feeds mainly on plants. the feeding field habitat selection relate with that whether the grassland burn or not last year. the important factors that determine the feeding field selection are the plant species, vegetative cover score. density hemerrocallis minor and the density of pedacularis sp. on burning grasslandsjthe density of vegetation. insects quanlity. plant species richness and the height of plant are the main factors that determine the feeding field selection on unburning grasslands

    大鴇是雜食性鳥類，但以植物性食物為主。對于取食地的選擇往往跟草原上一年是否被火燒過有關。在火燒地，植物種類數、植被蓋度、小黃花菜密度和蒿密度是取食地選擇的重要因素；在非火燒地，植被密度、昆蟲數量、植物物種豐富度及植物高度在大鴇取食地選擇中發揮重要作用。
  4. The great bustard selects the areas with abundant plant species. higher vegetative cover score. smaller proportion of bare area and taller plants to display on postfire grasslands ; the important factors that influence the great bustard to selection display fields are the proportion of hay, stipa baicalensis density and the thickness of hay on unburing grassland

    在火燒地，大鴇會選擇植物種類數較多、蓋度較大、裸地比例較小及植株相對較高處進行求偶炫耀；在非火燒地，枯草比例、貝加爾針茅密度及枯草厚度是影響其求偶場選擇的重要因素。
  5. Meanwhile, the study also shows that the diversity of studied cave animals is inversely proportional to human population density and water quality ; and bio - diversity, to some extent, is proportional to soil fertility and amount of chemical fertilizer, but inversely when excessive ; the correlativity between bio - diversity and vegetation cover rate is not obvious, when ground vegetation is strongly interfered by human being ; the amount of diestrammena marmorata is proportional to the d iversity of plant, and inversely proportional to soil fertility, and in a way, to water quality ; and the correlativity between community and water quality and soil fertility, and between water quality and the amount of mosquito and fly, is not as good as expected. the author points out that diestrammena marmorata, bat, mosquito, fly, oreolalaxrhohostig metus ( or cudata ), and fish can be chosen as in

    同時，研究還表明：調查洞穴的物種多樣性與人口密度、水質成負相關；在一定范圍內，物種多樣性與化肥施用量、土壤肥力成正相關，超過一定的值則成負相關;在人類對地表植被的高強度作用下，物種多樣性與植被覆蓋率的相關性不明顯;蚊蠅數量與土壤肥力基本上呈正相關;斑灶馬數量與植物種數呈正相關，斑灶馬數量與在一定水質范圍內與水質呈負相關，與土壤肥力呈負相關;群落數與水質和土壤肥力、蚊蠅數量與水質都不能表現較好的相關性;研究認為，可以選擇斑灶馬、蝙蝠、蚊蠅、紅點囊蟾（或有尾類） 、魚類等作為指示動物對洞穴環境進行監測。
  6. After selected various high yielding and hybrid varieties, their nutrient uptake pattern, interaction among fertilizer, varieties and plant density should be investigated

    近年來，我國選育出一批主要作物的高產品種和雜交種，應當研究它們的需肥特性，研究施肥與這些新品種及其種植密度等不同措施的關系。
  7. The hyphal density paralleling with ridge was much more higher than it in the non - inoculation treatment. a field experiment was carried out to test the effectiveness of the selected isolates with sweet potato as host plant

    接種處理中平行於壟的方向的菌絲密度和活性菌絲密度顯著增加，根內菌絲的alp活性和根外菌絲的sdh活性提高。
  8. 3. the great bustard is big - sized bird that build nest on the ground and the nests distribute in sparse group. most of their nests locate on the middle slope of hillocks, especially on the southern middle slopes towards to the sun, the biggest gradient is not more than 8 ?, the most important 3 factors that determine nest - site selection are height of plant. density and thickness of hay. 4

    大鴇是營地面鬆散型群巢的大型鳥類，多將巢築在海拔190 230m的草原崗坡的坡腰上，且以偏南向的朝陽緩坡的坡腰上為多，最大坡度不超過8 ，植被高度、密度和枯草厚度是決定其巢位選擇的3個最重要的因素。
  9. Tillering and earbearing characteristics of wheat varit ies “ miannong 4 " and “ miannon 3 " were studied under three densities. the results indicated that t he two varieties had medium tillering speeds and tillering numbers ， and their t illering number under medium density was 3. 7 tillers per plant ， which is less th a n that of “ mianyang 11 " ， a popular wheat variety in sichuan in 1980s. their perc en tage of earbearing was about 55 % ， which is also lower than that of “ mianyang 11 "

    在3種密度下對綿農4號、綿農3號的分蘗及成穗特性進行了初步研究，結果表明：綿農4號、綿農3號的分蘗速度和分蘗力皆為中等，中等密度條件下，有效分蘗期每天可形成0 . 15蘗，各期總蘗數為3 . 7左右，低於綿陽11號；與綿陽11號分蘗速度的差異主要在有效分蘗期；綿農4號、綿農3號的成穗率為55 %左右，低於綿陽11號；但分蘗和主穗的差異較小，分蘗穗重佔主穗重的80 %左右，莖蘗穗重變異系數15 %左右，穗子大小均勻一致，小穗相對較少，小穗較大，這些性狀都優于綿陽11號。
  10. Influence of different density of female plant on the yield and growing stage of qianyou no

    母本密度對黔油14號制種產量及生育特性的影響
  11. Data in table 5 show that although rice yield slightly increased with increasing plant density, the difference between densities was not significant, it indicated that in the case of high level fertilization, 300, 000 to 375, 000 hills per ha is enough for getting potential high yield

    表5中數據表明，雖然提高植株密度少量增加水稻產量，但密度間差異不顯著，這表明在高施肥量的情況下， 30萬和37 . 5萬蔸/公頃對獲得高產潛勢來說已很滿足。
  12. Based on the previous screenhouse study and field experiment, fertilization, plant variety and plant density were studied on two selected cropping systems : rape - rice - rice and wheat - rice, using an orthogonality design

    在過去網室研究和大田試驗的基礎上，在油菜-水稻-水稻和小麥-水稻兩種供試種植制度上研究了施肥、作物品種和種植密度，採用正交設計。
  13. Effect of plant density and fertilization on high yield of mgize zea mays l

    高產夏玉米的種植密度和肥料效應研究
  14. Effect of plant density and fertilizer application on plantain yield in two soils from colombia with different natural fertility is shown ( table 2 )

    表2說明了在哥倫比亞的兩種不同天然肥力土壤上種植密度及肥料用量對大蕉產量的影響。
  15. Cultivar selection had the greatest influence on yields while changes in either plant density, rate of plant nutrients or supplemental moisture did not improve yields

    品種對產量影響最大，而密度、施肥量及補充灌溉並不影響產量。
  16. The effect of plant density on the yield of rice for three varieties has been studied ( table 3. )

    已研究了三個水稻品種植株密度對產量的影響（表3 ） 。
  17. Plant density is an important factor for cultural management, there is a close relationship between plant density and fertilizer application

    植株密度是栽培措施的重要因素，植株密度和施肥間存在密切關系。
  18. Analysis of the relationship between the sowing time, plant density and yield of middle - season rice

    安徽省單季中稻播栽期和密度與產量關系淺析
  19. Effect of planting date, plant density and nitrogen application rate on yield and quality of vegetable soybean

    氮肥用量對菜用大豆產量和品質的效應
  20. The treatments leading to high levels of soybeans production were : different cultivar every year, normal plant density, either of the two levels of plant nutrients, and no irrigation

    獲得大豆高產的處理是：不同年份不同品種，一般密度，兩種施肥量之一，不灌水。
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