【Objective】 This study was aimed to clarify the biological classification of the diuron-degrading strain SL-6 obtained by screening and isolation, and optimize its degradation conditions for providing a new way to degrade diuron.【Method】 Diuron-degrading strain SL-6 was isolated in the soil of cotton field by enrichment culture, and identified by 16S rDNA and nrdA gene sequence analysis combined with morphological, physiological and biochemical characteristics. HPLC method was used to detect th...

Agricultural Science  Plant Science  Agronomy 

Doi:10.7671/j.issn.1001-411X.202104010

【Objective】 Nanocarrier was used as pesticide carrier to improve the utilization ratio of pesticide.【Method】 Hollow mesoporous silica nanoparticles (HMSNs) were synthesized by self-template method using water as etchant on the basis of solid mesoporous silica nanoparticles (MSNs). Botanical pesticide rotenone was loaded into HMSNs (Rot@HMSNs) by solvent evaporation method. The sustained-release property and insecticidal activity of Rot@HMSNs were determined. Distribution of rotenone in Rot@HMSNs...

Agricultural Science  Plant Science  Agronomy 

Doi:10.7671/j.issn.1001-411X.202104002

【Objective】 To explore the impacts of biotic and abiotic factors on the growth-defense physiological traits of invasive plant Alternanthera philoxeroides at large spatial scales, and provide a theoretical basis for dynamic prediction of invaded communities and bio-control under the global environmental change. 【Method】 We totally set up 72 plots invaded by A. philoxeroides with the area of 10 m×10 m per plot across 21°N？37°N in mainland China (36 terrestrial and 36 aquatic), and measured the nit...

Agricultural Science  Plant Science  Agronomy 

Doi: 10.7671/j.issn.1001-411X.202102013

【Objective】 To explore the difference of stoichiometric ratios between the invasive plant Alternanthera philoxeroides and the native congeneric species A. sessilis as well as the environmental driving forces, and clarify their resource allocation pattern and nutrition strategy. 【Method】 We totally set up six A.sessilis-A. philoxeroides coexistent plots and seven A. sessilis single plots in the wild habitats of Guangxi, Guangdong, Jiangxi and Henan Provinces. We measured w(C), w(N), w(P) and C∶N,...

Agricultural Science  Plant Science  Agronomy 

Doi:10.7671/j.issn.1001-411X.202105028

【Objective】 This study was aimed to investigate the tolerance of Ilex rotunda, absorptions and accumulations of lead (Pb) and cadmium (Cd) in Pb or Cd polluted soil, and provide a theoretical basis for phytoremediation of Pb or Cd contaminated soil. 【Method】 A pot experiment was conducted to evaluate the effects of single Pb pollution (500, 1 000 and 1 500 mg·kg？1) and single Cd pollution (10, 25 and 50 mg·kg？1) on growth, root morphology, nutrients and Pb or Cd absorption and accumulation of I....

Agricultural Science  Plant Science  Agronomy 

Doi:10.7671/j.issn.1001-411X.202107043

【Objective】 To explore the effects of drought stress on maize tassel development characteristics and yield, and provide a theoretical basis for drought resistance and yield protection of maize planting in northeast China.【Method】 In the pot experiment, original soil treatment and adding soil conditioner treatment were set up. Different drought stress degrees of normal water supply (CK), light drought stress, moderate drought stress, and severe drought stress were conducted from the big trumpet s...

Agricultural Science  Plant Science  Agronomy 

Doi: 10.7671/j.issn.1001-411X.202107025

【Objective】 The wetting behavior of the front and back surfaces of banana leaves at different growth stages of the banana tree canopy was studied, in order to provide a basis for the regulation mechanism of pesticide droplets retention on the surface of banana leaves.【Method】 The static wetting properties of the banana leaf surface were characterized by a contact angle measuring instrument, the dynamic wetting behavior of droplets on the surface of the banana leaf was recorded by a high-speed ca...

Agricultural Science  Plant Science  Agronomy 

Doi:10.7671/j.issn.1001-411X.202202028

【Objective】 To clarify the pathogen causing Trichosanthes kirilowii fruit rot and screen effective fungicides for controlling the disease. 【Method】 Samples of rot fruit from T. kirilowii plants were collected from Dabie Mountain Areas, Anhui Province in 2019—2020. A total of 35 representative isolates were obtained by tissue isolation. The pathogenicity was verified according to the Koch’s postulate, and the causal agents were identified based on the morphological characteristics and multilocus ...

Agricultural Science  Cell Biology  Plant Science  Agronomy 

Doi:10.7671/j.issn.1001-411X.202202006

【Objective】 The present study aimed to screen and isolate the antagonistic fungal strains with strong control effect against fusarium wilt from rhizosphere soil ofSaposhnikovia divaricata. 【Method】 The strain MR-97, which was antagonistic to Fusarium oxysporum, was isolated from the rhizosphere soil of S. divaricata by confrontation culture method, and its bacteriostatic spectrum was determined. The strain was identified by fungal colony characteristics, microscopic characteristics and ITS seque...

Agricultural Science  Plant Science  Agronomy 

Doi:10.7671/j.issn.1001-411X.202203035

【Objective】 The aim of this paper was to analyze and predict the potential suitable regions of Emex australis in China and the major environmental variables affecting its distribution, and provide a theoretical reference for the prevention of the invasion ofE. australis into China and protection of the agricultural production and ecological security. 【Method】 The Jackknife was used to calculate the influence of each environmental variable on the species distribution. ENMeval was used to optimize...

Agricultural Science  Plant Science  Agronomy 

Doi:10.7671/j.issn.1001-411X.202203041