There are many diseases in the repeated cultivation of beans, so we must first do these tasks

Bean cultivation is very afraid of repeated cropping. Years of planting are prone to problems such as weak growth, many diseases, premature aging, and serious dead trees, which greatly affect the yield and benefits of beans. Crop rotation is the best measure to avoid the harm of repeated cropping, but many vegetable farmers are restricted by land and other factors and can only plant crops continuously. To reduce the damage of repeated cropping, the following measures can be taken:

1. Completely clean up the countryside

After the last stubble of vegetables is pulled out, the countryside should be cleaned up in a timely and comprehensive manner, and the fallen leaves and roots should be removed as much as possible to reduce plant residues and avoid their harm.

2. Adjust base fertilizer

Continuous cropping damage will make the nutrients in the soil unreasonable, resulting in poor plant growth and weak resistance.

Need to adjust the base fertilizer to improve soil nutrition.

1) Pay attention to adjusting the ratio of fertilization to avoid partial application of chemical fertilizers.

Before plowing the land, use 3 to 5 cubic meters of decomposed chicken manure, pig manure, etc., high-quality high-potassium compound fertilizer 50 kg, and 25 kg superphosphate per mu. In addition, the beans are more sensitive to boron, zinc, molybdenum, etc., so pay attention to supplement it in the base fertilizer. You can use 1 kg of zinc sulfate, 1 kg of boric acid or borax, and 150 g of ammonium molybdate per acre, which can be combined into a solution and turned over. Spray on the ground before turning into the soil.

2) There are many diseases in the stubble field, mainly because there are a large number of pathogens left in the soil on the last crop of beans. Once it encounters the retting roots, it is easy to cause the pathogens to take advantage of the deficiency and infect the disease. The improvement measures focus on prevention, such as applying carbendazim to prevent seedling diseases during planting. What needs to be reminded is that pesticides have a limited range of action, which can only solve temporary worries and cannot guarantee the normal growth of beans.

3. Strengthen top dressing

It is not only necessary to topdress compound fertilizer, but also to adjust the proportion of topdressing reasonably. On the one hand, it is necessary to supplement nutrition, on the other hand, promote rooting, improve root disease resistance, and avoid premature plant senescence.

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