The soil environment plays an important role in the growth of weeds. The soil moisture and the depth of seed burial are very important for the growth of crabgrass. However, the occurrence of each weed has its own optimum temperature, humidity and depth range. Therefore, to predict the emergence of crabgrass, it is necessary to understand the response law of the emergence of crabgrass on the soil temperature and humidity and the depth of seed burial. There have been many reports on the impact of these factors, but most of the studies are limited to the analysis of the effect of these factors on the emergence of crops, and their related emergence models have rarely been reported in China. It is of great significance to study and establish the influence of temperature and humidity interaction, depth of seed burial, and other conditions on the emergence of crabgrass in the prediction of the emergence and damage of crabgrass and the corresponding measures to control the occurrence of crabgrass. The multi-point soil temperature and humidity recorder can accurately measure the soil temperature and humidity, and provide data for research.
Soil moisture setting method: Put the non-polluted soil sample 3509 ready to dry to a constant weight into a triangle funnel (12 m in diameter), add a certain amount of water in the funnel until the funnel starts to drip, and then use The sealing film closes the top of the funnel. After 24 h, the water content in the saturated soil sample was determined. The moisture content of this 24 h saturated water was set at 100%, and other moisture content was taken as the standard. Weigh a quantitative amount of non-polluting soil samples that have been baked to constant weight to a diameter of 9. In the petri dish of m, add the person's quantitative water to achieve the required soil moisture content. The soil sample was then stirred well, capped, sealed in an incubator, placed at the temperature of the test to be placed for 24 to 48 hours, and then ready for sowing.
Through the measurement of multiple soil temperature and humidity recorders, there are many factors that affect the emergence of Magnaponium, but the most important influencing factors are temperature, soil moisture content, depth of seed burial, and the impact of these factors on the emergence of Magnaporthecus sinensis was studied and established. The model is of great significance for predicting the emergence and damage of crabgrass and formulating corresponding measures to control the occurrence of crabgrass. On the basis of the emergence model, according to the specific meteorological data of the field, the emergence of the crabgrass can be predicted, which can provide a certain theoretical basis for the control and prevention of weeds.
Soil moisture setting method: Put the non-polluted soil sample 3509 ready to dry to a constant weight into a triangle funnel (12 m in diameter), add a certain amount of water in the funnel until the funnel starts to drip, and then use The sealing film closes the top of the funnel. After 24 h, the water content in the saturated soil sample was determined. The moisture content of this 24 h saturated water was set at 100%, and other moisture content was taken as the standard. Weigh a quantitative amount of non-polluting soil samples that have been baked to constant weight to a diameter of 9. In the petri dish of m, add the person's quantitative water to achieve the required soil moisture content. The soil sample was then stirred well, capped, sealed in an incubator, placed at the temperature of the test to be placed for 24 to 48 hours, and then ready for sowing.
Through the measurement of multiple soil temperature and humidity recorders, there are many factors that affect the emergence of Magnaponium, but the most important influencing factors are temperature, soil moisture content, depth of seed burial, and the impact of these factors on the emergence of Magnaporthecus sinensis was studied and established. The model is of great significance for predicting the emergence and damage of crabgrass and formulating corresponding measures to control the occurrence of crabgrass. On the basis of the emergence model, according to the specific meteorological data of the field, the emergence of the crabgrass can be predicted, which can provide a certain theoretical basis for the control and prevention of weeds.
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