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CN-121998316-A - Analysis method for influence factors of intercropping mode between farmers' choices

CN121998316ACN 121998316 ACN121998316 ACN 121998316ACN-121998316-A

Abstract

The invention discloses an analysis method of a farmer's interplanting mode influence factor, which comprises the following steps of 1, selecting an investigation place according to investigation purposes, 2, designing a semi-structured investigation questionnaire of an inter-farmer interplanting production mode based on a theoretical framework, performing field investigation, issuing the investigation questionnaire to perform pre-investigation, modifying the investigation questionnaire according to the pre-investigation condition to realize localization of the questionnaire, 3, selecting the investigation place and the farmer, issuing the investigation questionnaire to obtain an initial data sample according to investigation questionnaire contents filled by the farmer, 4, preprocessing data of the retrieved inter-farmer interplanting production mode investigation questionnaire, 5, constructing an inter-farmer interplanting mode influence factor model based on multiple regression Tobit model analysis, 6, importing processed data into R language statistics software, and performing regression analysis on processed sample data. The invention can provide basis for establishment of popularization policy of intercropping at farmer level.

Inventors

  • LI CHUNJIE
  • ZHAO CHENGRAN
  • WANG ZHAOBO
  • ZHAO JIANHUA

Assignees

  • 中国农业大学

Dates

Publication Date
20260508
Application Date
20260104

Claims (7)

  1. 1. The analysis method of the interplanting mode influence factors among the farmers is characterized by comprising the following steps: selecting investigation places according to investigation purposes, wherein representative villages and towns are selected in the selected counties according to the investigation purposes, and specific villages, villages and farmers are determined by adopting a layered sampling method, so that samples can represent the whole and contain key variations required by the investigation; Step 2, designing a semi-structured questionnaire of a intercropping planting production mode based on a theoretical framework, performing field investigation and issuing the questionnaire for pre-investigation, and modifying the questionnaire according to the pre-investigation condition to finish localization of questionnaire contents; step 3, selecting an investigation place and a farmer, issuing the investigation questionnaire designed in the step 2, and obtaining an initial data sample according to the content of the investigation questionnaire filled by the farmer; step 4, taking the inter-farmer intercropping planting mode questionnaire obtained in the step 3 as an initial data sample, and performing data preprocessing to obtain processed sample data; Step 5, constructing a farmer intercropping planting mode influence factor model based on multiple regression Tobit model analysis; And step 6, importing the sample data processed in the step 4 into R language statistics software, and carrying out regression analysis on the processed sample data to determine social and economic factors influencing the farmer's selection of intercropping modes.
  2. 2. The method for analyzing factors affecting a user's interaction pattern according to claim 1, wherein in step 2, the designing and localization of the questionnaire comprises the steps of: Step 2.1, according to a comprehensive theoretical framework affecting the selection of farmers, main socioeconomic factors affecting the intercropping mode of the farmers are divided into three types, namely family assets, family characteristics and other external factors, and the theoretical framework forms a basis for analyzing the influence factors of the intercropping mode of small farmers; Step 2.2, going to the planned investigation region, selecting 3-5 farmers, developing a depth interview based on the investigation questionnaire designed according to the theoretical framework, confirming whether concepts and problems in the questionnaire are understood by local farmers in the interview, and whether the local farmers have differences according to the independent variables set by the theoretical framework; And 2.3, modifying the investigation questionnaire according to the feedback of the pre-investigation, and completing localization of the investigation questionnaire.
  3. 3. The method for analyzing the influence factors of the intercropping mode for the farmers according to claim 1, wherein in the step 3, the small farmer's influence factor investigation questionnaire comprises family characteristics, family assets and intercropping planting modes: family characteristics include male labor duty, tending ratio and risk awareness; The household assets comprise 1) natural assets, 2) physical assets, 3) financial assets, 4) human assets, and 4) human assets, wherein the natural assets comprise the area of the contracted land and the quantity of the contracted land, the physical assets comprise the types and the quantity of agricultural machinery and the types and the quantity of livestock, the financial assets comprise the proportion of planting income to the total household income, and the human assets comprise the labor/land ratio, the average education degree of labor, the average age of labor and intercropping planting experience; The intercropping planting mode comprises crop combination and planting area.
  4. 4. The method for analyzing factors affecting a farmer's selection room mode according to claim 1, wherein in step 4, the data preprocessing includes the steps of: Step 4.1, eliminating the incomplete filled samples with missing data in the questionnaire, and obtaining the questionnaire after screening as a final effective questionnaire; step 4.2, mapping discrete data in the initial data sample in the final valid questionnaire into a digital type; And 4.3, on the basis of the step 4.2, adding up all the option scores of the surveyors to obtain the final score of the questions for the possession of the multi-choice question agricultural machine and the intercropping planting experience among farmers.
  5. 5. The method for analyzing the influence factors of the inter-farmer selection intercropping mode according to claim 1, wherein in the step 5, an inter-farmer intercropping planting mode influence factor model is constructed based on Tobit regression equation, and Tobit model is a limited dependent variable model with distribution cut-off characteristics and is used for continuous selection behavior analysis with deletion; Because the intercropping planting area occupies small total planting area of village, a large number of zero values exist in the data set, tobit model is a proper method for processing a large number of zero values in dependent variables, tobit regression method is adopted for analysis, and the model is constructed as follows
  6. Ic i is a intercropping index for farmer i; AS jki is the j index of the k asset of farmer i; HC li is the first family characteristic index of farmer i; VD mi is a virtual variable, which takes a value of 1 if farmer i resides in village m C 0 /c jk /c l /c m is an unknown coefficient; i Is a disturbance term with standard properties.
  7. 7. The method for analyzing the influence factors of the intercropping mode of the farmer selection according to claim 1, wherein in the step 6, the regression analysis process comprises the following steps: Step 6.1, tobit model regression analysis, in which the total planting area of intercropping between farmers and the planting areas of different intercropping modes are used as dependent variables, the family assets, family characteristics and village virtual variables are used as independent variables, and a maximum likelihood estimation method is adopted to estimate model parameters; Step 6.2, judging Tobit model fitting conditions according to Tobit model overall significance test, wherein the significance of likelihood ratio test is less than 0.05, which means that Tobit model overall setting is reasonable and fitting results are ideal; step 6.3, analyzing the influence direction and degree of each factor on the intercropping planting area of the farmers through the salience and coefficient sign of the independent variable, wherein the salience and coefficient sign respectively indicate that the independent variable has a salience effect on the potential intercropping area of the farmers at the salience level of 10%, 5% and 1%; Step 6.4, performing stability test on the Tobit model by using the fractional probability model; And 6.5, summarizing key factors which have obvious influence on the intercropping planting decision of farmers, and accordingly, proposing policy suggestions for popularizing intercropping modes.

Description

Analysis method for influence factors of intercropping mode between farmers' choices Technical Field The invention relates to the field of agricultural technology economy, in particular to an analysis method for influence factors of a intercropping mode selected by farmers. Background Intercropping, which is an ancient agricultural technology, plays an important role in agricultural production in China, improves the crop yield on a unit area by alternately planting two or more crops on the same land in time sequence, and obtains higher and more stable yield under the condition of reducing investment. In addition, intercropping is helpful for inhibiting plant diseases and insect pests and weeds and improving soil fertility. Especially, when the leguminous crops are intercropped with the leguminous crops, the leguminous crops can further enhance the soil fertility by increasing the quantity and the quality of crop residues influenced by nitrogen input in the system through biological nitrogen fixation, so that the productivity of the whole planting system is improved. As intercropping can reduce the environmental cost, improve the soil function without affecting the crop yield, it is proposed that the intercropping can be adopted to replace the traditional intensive planting system. However, with the evolution of modern agriculture into a large-scale, mechanized direction, traditional labor-intensive intercropping modes are being subjected to strong impact of intensive production of a single crop. The traditional intercropping mode, such as corn/wheat intercropping mode, can fully utilize light, heat, water and soil resources and improve the total yield of unit area. But the production link is complex, the requirement on field management is high, the labor input is intensive, and the compatibility with large-scale mechanized operation is poor. In contrast, the single-crop planting production process is highly simplified, the whole process is easy to realize mechanization, the labor productivity is high, the scale benefit is obvious, but the system stability is poor, the dependency on chemical fertilizers and pesticides is high, the resource utilization efficiency is low, and the larger production and environmental risks are faced. The resource efficiency advantage of traditional intercropping is clearly compared with the labor-saving cost-saving advantage of single-cropping planting, so that a plurality of farmers, especially farms in a scale expansion stage, are in a dilemma in the selection of a planting system, and the optimal path is difficult to select according to own resource endowment. Intercropping can only be widely adopted, and can contribute to sustainable grain production in China. Therefore, an analysis method for the influence factors of the intercropping mode selected by the farmer is needed to solve the above technical problems. Disclosure of Invention The invention aims to provide an analysis method for influence factors of a peasant household inter-selection intercropping mode, which accurately identifies key driving factors and obstacle factors influencing the peasant household inter-selection intercropping mode. Provides basis for formulating more targeted policies and popularization strategies, thereby effectively enhancing the intention and capability of farmers to adopt sustainable planting systems, and promoting the wide application and innovative development of intercropping the more sustainable agricultural measures under the modern agriculture condition. The purpose of the invention is realized in the following way: An analysis method for a farmer selection intercropping mode influence factor comprises the following steps: Selecting investigation places according to investigation purposes, wherein in the selected county, representative villages (such as distance from a county center, economic development level and the like are layered) are selected according to the investigation purposes, a layered sampling method is adopted to determine specific villages, villages and farmers, and the fact that samples can represent the whole and contain key variations required by the study is ensured; Step 2, designing a semi-structured questionnaire of a intercropping planting production mode based on a theoretical framework, performing field investigation and issuing the questionnaire for pre-investigation, and modifying the questionnaire according to the pre-investigation condition to finish localization of questionnaire contents; step 3, selecting an investigation place and a farmer, issuing the investigation questionnaire designed in the step 2, and obtaining an initial data sample according to the content of the investigation questionnaire filled by the farmer; step 4, taking the inter-farmer intercropping planting mode questionnaire obtained in the step 3 as an initial data sample, and performing data preprocessing to obtain processed sample data; Step 5, constructing a farmer intercroppin