Agricultural activities in the north mainly include ploughing, fertilizing, sowing, weeding, watering and spraying pesticides.

Cultivated land: Cultivated land is the basic resource and condition for human survival.

Fertilization: Fertilization refers to the agricultural technical measures of applying fertilizer to soil or spraying it on plants to provide nutrients needed by plants and maintain and improve soil fertility.

Sowing: It is one of the crop cultivation measures.

Weeding: Weeds are controlled by manual intertillage and mechanical intertillage.

Watering: It is a very important link in planting activities.

I. Cultivated land

1. Cultivated land is the basic resource and condition for human survival. 2 1 century, due to the increasing population, cultivated land gradually decreased, and people's living standards continued to improve. To maintain the sustainable development of agriculture, we must first ensure the quantity and quality of cultivated land.

2. According to the incomplete statistics of UNESCO and FAO, the world's land area is about 65.438+82.9 million hectares, and the per capita cultivated land is 0.26 hectares.

Second, fertilization.

1. Fertilization refers to the agricultural technical measures of applying fertilizer to soil or spraying it on plants to provide the needed nutrients for plants, while maintaining and improving soil fertility.

2. The main purpose of fertilization is to increase crop yield, improve crop quality, improve soil fertility and improve economic benefits. Therefore, rational and scientific fertilization is one of the main means to ensure food security and maintain the sustainable development of agriculture.

Third, sow.

1. Sowing is one of the crop cultivation measures, and it is the operation of sowing materials into a certain depth of soil layer in a certain amount and manner at the right time.

2. Proper sowing will directly affect the growth and yield of crops. In order to improve the quality of sowing, it is necessary to do a good job in seed treatment, labor, animal power and seeder before sowing.

Fourth, weeding

1, intertillage weeding is a very traditional weeding method. Weeds in farmland are controlled by manual and mechanical intertillage.

2. Intertillage weeding is targeted, clean and thorough, and the technology is very simple, which can not only control weeds, but also provide good growth conditions for crops.

Verb (abbreviation for verb) water

1. Watering belongs to gardening and is a very important link in planting activities.

2, watering can be directly poured with pot soil or flowers. Generally, for fast-growing flowers or too dry soil, be careful not to drench plants and leaves. If the leaves are wet, the plants may be sunburned.

Six, spraying pesticides

Spraying pesticides on the ground is an effective means to reduce the spread of diseases after vegetable planting. After digging the planting holes, pesticides such as metalaxyl manganese zinc (Jin Lei) and copper succinate can be sprayed on the ground, which can reduce the occurrence of diseases at seedling stage, and the effect is very obvious.