Influence of peanut continuous cropping and its solving measures

Peanut is not only a food crop, but also a very important oil crop in China, which has a large area. However, many people do not pay attention to rotation when planting peanuts, which leads to the phenomenon of continuous cropping of peanuts, which seriously affects the growth of peanuts. So what will be the specific impact of repeated peanut cropping? How should we solve the problem? The following editor will give you a brief introduction, let's have a look!

First, the influence of continuous cropping

1. Poor quality of seedlings.

Continuous cropping of peanuts will lead to serious insect pests such as grubs in the soil. When planting peanuts, the activity of grubs is at its peak. Grubs will gnaw on peanut seeds, thus reducing the germination rate of peanut seeds. And even if it germinates, it will produce weak seedlings, and in the place of continuous cropping, there are too many organic acids in the soil, which is very disadvantageous to the nutrition absorption of peanuts, thus delaying the seedling stage of peanuts and increasing the rate of seedling death.

2. Poor quality

The most difficult thing to control in peanut continuous cropping is the problem of diseases and insect pests, which will seriously affect the yield and quality of peanuts. After continuous cropping of peanuts, a large number of harmful bacteria will be produced in the soil, and these bacteria are difficult to be effectively eliminated with pesticides. And continuous cropping of peanuts will not only reduce the number of pods, but also reduce the full fruit rate, seriously affecting the yield. Studies have found that the yield of peanuts planted continuously for more than two years is reduced by about 10%, and if it is planted for three years, the reduction can reach 25%.

II. Solution measures

1. Rational fertilization

When we apply fertilizer, we should apply farm manure properly, which can effectively reduce the phenomenon of repeated cropping. Because the nutritional structure of farm manure is more comprehensive, it can improve the soil structure and promote the reproduction of beneficial microorganisms in the soil. Beneficial microorganisms in soil can not only inhibit the occurrence of soil-borne diseases, but also decompose toxic substances in soil. Therefore, when applying fertilizer, we should pay attention to applying more farm manure and biological fertilizer to improve soil quality.

2. Dig deep into the soil

After the soil is frozen in winter every year, the soil should be deeply turned over. Because in the low temperature and cold environment, turning deep into the soil can effectively eliminate a large number of bacteria and insect eggs overwintering in the soil, thus reducing the number of pathogens in the second year. Especially for bacteria such as white silk disease which are active in the surface layer of soil, as long as the bacteria are below 7cm in the soil layer, their activity will decrease sharply, thus reducing the harm to peanut.

3. Increase the amount of medium and trace elements

The demand for calcium in peanut growth is relatively large. Therefore, for the phenomenon of peanut stubble, if it is caused by the lack of calcium or other medium and trace elements, then we should timely supplement the appropriate amount of silicon, calcium, magnesium and other trace elements. At the same time, during the flowering period of peanuts, appropriate amount of foliar fertilizer can be sprayed to meet the demand of peanuts in the critical period and improve the fruit setting rate of peanuts.

The above is a brief introduction to the impact of peanut continuous cropping and solving measures. That's all for today's introduction. This article is for reference only. I hope it can help you all.