Soybeans should not be re-seeded

Soybean is commonly known as soybeans. Farmers have the traditional habit of planting soybeans this year and continue to plant them next year. As a result, the growth of soy-heavy soybean plants is slow, dwarf, yellowing of leaf color, susceptibility to pests and diseases, and low grain size, resulting in a significant reduction in yield. According to the survey, under normal circumstances, soy pods cut production by 20% to 30% or more, and the main reasons for the decrease in production are:
Diseases and insect pests are prone to occur: Several diseases caused by soybeans, such as bacterial spot, black spot, blight, and yellow blight, have suitable conditions for disease in soy soil, which inevitably occurs in large numbers, especially in nematodes. Serious harm.
The toxic effects of root microbial exudates: Soybean roots can secrete certain substances that are acidic, and form some toxic substances, such as ferrous salts, left in the soil, so that the normal nutrient metabolism process of heavy-seed soybeans is affected, and the roots develop. Bad, Rhizobium activity weakened, plant growth was inhibited, resulting in reduced production.
Excessive consumption of nutrients: Due to the excessive consumption of phosphorus in the soil due to the weight loss of soybeans, the ratio of available nitrogen and phosphorus is imbalanced, which affects the growth of soybeans. Therefore, in the production of soybeans, it is necessary to avoid double cropping. It is advisable to implement crop rotation systems with other crops for more than three years.

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