【Objective】 In order to improve the accuracy of mechanized seeding of Panax notoginseng, according to the characteristics of small row spacing of P. notoginseng, a new type of seed guide tube was studied. 【Method】 The mechanical model was established with and without seed guide tube, respectively. The experiment was carried out in soil trough through the three-factor-five-level quadratic regression orthogonal rotation combination experiment with seed release height, seeder forward speed and seed...

Agricultural Science  Agricultural Engineering  Agronomy 

Doi:10.7671/j.issn.1001-411X.202104007

【Objective】 A goose incubator monitoring system based on programmable logic controller (PLC) and cloud platform was designed in order to improve the incubation performance of goose eggs, and to solve the problems of low automation, large temperature fluctuations, poor temperature robustness, and complex on-site operations in the incubation process of the existing goose incubator.【Method】 Based on the technological requirements in the incubation process of goose eggs and the working principle of ...

Agricultural Science  Technology  Agricultural Engineering  Agronomy 

Doi:10.7671/j.issn.1001-411X.202104023

【Objective】 While detecting the concentration of organophosphorus pesticides in natural water by ultraviolet-visible absorption spectroscopy method, the detection accuracy was easily interfered by the turbidity caused by suspended solids in the natural water, therefore the natural water containing organophosphorus pesticides was needed to be pretreated (filtered) before detection. This paper studied the effects of different filtration conditions on the absorption spectra and concentration predic...

Agricultural Science  Technology  Agricultural Engineering  Agronomy 

Doi:10.7671/j.issn.1001-411X.202103033

【Objective】 Aiming at the special agronomy of small row spacing and shallow sowing depth of slot type Panax notoginseng seedling, a compact soil covering and compacting device for seed ditch was designed to improve the quality of P. notoginseng seedlings. 【Method】 On the basis of the field experiment to determine the range of matrix compactness with high emergence rate and the best seedling grade of P. notoginseng, the dynamic analysis of the contact between roller and soil was carried out to de...

Agricultural Science  Agricultural Engineering  Agronomy 

Doi: 10.7671/j.issn.1001-411X.202106019

【Objective】 Aiming at fast recognition of multi-feature variable target by robot vision in field environment, and considering the problem that the accuracy of target is affected by leaves, shade and light, a fast recognition method of multi-feature target was proposed.【Method】 A multi-scale feature extraction and classification model was proposed for three targets including banana fruit, fruit axis and flower bud. New target candidate box parameters were designed using clustering algorithm. The ...

Artificial Intelligence  Agricultural Science  Agricultural Engineering  Agronomy 

Doi:10.7671/j.issn.1001-411X.202108009

【Objective】 The purpose of this article is to monitor cotton pest in field based on Logistic algorithms and multi-spectral remote sensing images.【Method】 The cotton areas with insect pests were selected as the research object. The multi-spectral remote sensing images of cotton field were acquired by UAV, and then pre-processed. Based on the spectral characteristics of cotton pests, the Logistic regression model was constructed by the reflectivity of pest-sensitive band and vegetation index to id...

Agricultural Science  Technology  Agricultural Engineering  Agronomy 

Doi: 10.7671/j.issn.1001-411X.202106004

【Objective】 The construction method of discrete element model and the setting of simulation parameters of sugarcane segment as stalk material with large length and diameter ratio are not clear, the accuracy of the model has a great influence on the dynamic response characteristics between particles, and the accuracies of the simulation parameters need to be improved by parameter calibration.【Method】 Taking the physical repose angle of sugarcane segment as the response value, the discrete element...

Agricultural Science  Agricultural Engineering  Agronomy 

Doi: 10.7671/j.issn.1001-411X.202108015

【Objective】 To achieve low-cost agricultural machinery field positioning for small and medium-size farmland in southern China, so as to reduce labor intensity for machine operator, and improve the working efficiency of agricultural machinery.【Method】 This system utilized ultra wide band (UWB) technology to accomplish real-time positioning of operating machinery, and the precise three-dimensional coordinates of the positioning labels were calculated using the localization algorithm. The position ...

Agricultural Science  Agricultural Engineering  Agronomy 

Doi:10.7671/j.issn.1001-411X.202107049

【Objective】 In order to realize the precise application of herbicides for lawn weed management, an improved fuzzy C-means (FCM) clustering segmentation algorithm was proposed to solve the problem that it is difficult to segment weeds due to the similar color between weeds and lawns in natural environment.【Method】 The region of interest was extracted by extra-green operator, and the multi-channel information in HSV space was incorporated for image preprocessing to expand the feature difference be...

Agricultural Science  Technology  Agricultural Engineering  Agronomy 

Doi: 10.7671/j.issn.1001-411X.202109005

【Objective】 In view of the current situation that the quality of transplanting is mainly based on manual observation and random sampling in China, it is proposed to use the convolutional neural network GoogLeNet to recognize the morphology of rice seedlings.【Method】 Firstly, clear and intact images of rice seedlings were obtained by UAV aerial photography at low altitude. Data sets of floating seedlings, damaged seedlings and qualified seedlings were made by cutting and marking. Then, based on t...

Agricultural Science  Technology  Agricultural Engineering  Agronomy 

Doi: 10.7671/j.issn.1001-411X.202107041