Introduction of Eucalyptus species has effectively promoted wood industry in ***, large scale planting of Eucalyptus trees has seriously influenced healthy development of regional ecological ***,conducting researches ...
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Introduction of Eucalyptus species has effectively promoted wood industry in ***, large scale planting of Eucalyptus trees has seriously influenced healthy development of regional ecological ***,conducting researches of allelopathy in Eucalyptus species is significant to regional ecological safety and biodiversity *** this study,Eucalyptus
Weed is one of the barrier factors for upland rice extension in large *** citywide survey of upland rice-field weeds in shanghai in 2005 and 2006 showed that there were 26 species belonging to 12 families and 21 gener...
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Weed is one of the barrier factors for upland rice extension in large *** citywide survey of upland rice-field weeds in shanghai in 2005 and 2006 showed that there were 26 species belonging to 12 families and 21 genera,the accurance of weeds showed excessive,long period, drought and wet weed colony's *** control efficiency evaluation experiments were carried out with eight pre-emergence *** results showed that 33%pendimethalin EC,90%benthiocarb EC,23.5%oxyfluorfen EC,36%butachlor + oxadiazon EC all had weed control effect in different *** them,pendimethalin（495g a.i./hm） combining with pyrazosulfuron-ethyl（15、22.5g a.i./hm） respectively could get satisfying effects and long effective period,once spraying could control all the tested weeds which in the whole growing period of upland *** the above mentioned dosages of herbicides had no adverse effect on plant height,tiller number,panicle length,and grain number per panicle.
Based on the combination of plant culture technique and allelopathic bioassay,allelopathic response and dynamic modes of Cucurbila moschata *** roots was conducted through regulating kinds and contents of selective ma...
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Based on the combination of plant culture technique and allelopathic bioassay,allelopathic response and dynamic modes of Cucurbila moschata *** roots was conducted through regulating kinds and contents of selective mass element and micro-elements in B culture base, under four concentration series（1/2 B5,B5,3/2 B5,and 2 B5） for five necessary elements(P,Mg,
The influence of temperature,soil moisture and thickness of the soil to seed germination of ragweed(Ambrosia artemisiifolia ),false sorghum(Sorghum halepense),gill chrysanthemum Nim(Sida spinosa) and split Pharbitidis...
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The influence of temperature,soil moisture and thickness of the soil to seed germination of ragweed(Ambrosia artemisiifolia ),false sorghum(Sorghum halepense),gill chrysanthemum Nim(Sida spinosa) and split Pharbitidis(Ipomoea nil)was conducted in this *** of ragweed,gill chrysanthemum Nim and false sorghum was more suitable when the soils
The chemical components and allelopathic effects of Pistia stratiotes L.,an exotic invasive plant in Dian Chi of Kunming,Yunnan were carried *** Pistia stratiotes *** column chromatography on silica,Sephadex LH-20,Toy...
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The chemical components and allelopathic effects of Pistia stratiotes L.,an exotic invasive plant in Dian Chi of Kunming,Yunnan were carried *** Pistia stratiotes *** column chromatography on silica,Sephadex LH-20,Toyopearl HW-40F and RP-18 *** compounds were isolated and identified by spectral analysis as(24R) - ergosta -7,22 -diene- 3β, 5α,6β-triol(1),7β-hydroxysitosterol(2),sitoindoside I(3),soyacerebroside I(4),luteolin(5), chrysoeriol 4'-O-β-D-gIuco pyranoiside(6),stigmasta-5,22-diene-3,7-diol(7),inosine(8), annuionone E(9),β-sitosterol(10),daucoterol(11).Compounds 1-9 were first obtained from this plant.
In order to understand rice variety adaptation to no-tillage and direct seeding rice and weed control,experiments was conducted at Haining,Zhejiang Province and Wuhan,Hubei *** results indicat that weed control to no-...
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In order to understand rice variety adaptation to no-tillage and direct seeding rice and weed control,experiments was conducted at Haining,Zhejiang Province and Wuhan,Hubei *** results indicat that weed control to no-tillage and direct seeding rice field,the herbicide of 41%roundup in water aqua was used at 7 to 10 days before seeding,the herbicide of 38%bensufuron-methyl in water soluble powder was used as second time treatment at rice two-leaf and one heart to three-leaf stage,and last time treatment the herbicide of 10% cyhalofop butyl in emulsion was used at rice four leaf *** weeds control were given after treatment of these herbicides in combination *** results also indicated that all of the test varieties of rice had good adaptability for no-tillage and direct seeding under the local environment *** grain yield of rice was obtained.
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