Intertillage weeding is a traditional weeding method. Weeds in farmland can be controlled in time through artificial intertillage and mechanical intertillage. Intercropping weeding is targeted, clean and thorough, and the technology is simple. It can control weeds and provide good growth conditions for crops. In the whole process of crop growth, you can enter the plant intercropping for weeding many times as needed. When weeding, we should seize the favorable opportunity, early, small and complete, and leave no grass to avoid future troubles. The masses cultivated weeds and came to the conclusion that "weeding with grass buds is not as good as weeding with a lawn mower", that is, weeding should be done when sprouting.

Intertillage refers to shallow turning of soil and loosening of topsoil. ? Mainly loose topsoil, generally combined with weeding, irrigation after rain and soil hardening. ? In North American nursery industry, intertillage weeding is often used to cultivate large seedlings in the field, which not only plays the role of loosening soil and weeding, but also avoids environmental pollution caused by the use of herbicides. Plants in crop growth period and topsoil cultivation between rows. ? You can use tools, such as hoes, plows, rakes and all kinds of cultivators. ? Intercropping can loosen topsoil, increase soil aeration, raise ground temperature, promote aerobic microbial activity and nutrient availability, eliminate weeds, promote root extension and regulate soil moisture status.

Intertillage can subdivide clods, loosen soil, circulate air, promote root respiration and soil aerobic microbial activities, promote soil organic matter decomposition and increase soil fertility;

Intercropping can cut off the rise of capillary water, reduce soil moisture evaporation and maintain soil moisture;

It can make the heat in the soil difficult to dissipate and raise the soil temperature;

In winter and early spring, loose topsoil can play a role in heat preservation;

Intertillage is beneficial to eliminate weeds and pests.

Principle and method of intertillage: The time and times of intercropping vary with crop species, seedling conditions, weeds and soil conditions. Generally, dry farming is carried out at seedling stage and before seedling sealing, and rice is carried out at tillering stage. Plant crops about 3-4 times a season. For example, long crop growth period, late harvest, many weeds in the field and sticky soil can increase the number of intertillages and keep the ground soft and weed-free. In the process of crop growth, the depth of intertillage should master the principle of shallow depth. That is, the seedling stage of crops should be shallow to avoid root damage; It should be deepened in the middle growth stage to promote root development; In the late growth stage, crops should be shallow before sealing, mainly broken and hardened.