In recent years, with the development of agricultural production, crop varieties continue to update production and quality requirements are increasing, the nutrients needed to supplement crops have also increased, and the application of trace elements has increased compared with the past, but due to individual regions and farmers The fertilization variety is single, heavy application of nitrogen, phosphorus, potassium, neglecting trace elements, has a great impact on crop yield and quality. If the scientific fertilization technology is well-mastered, it will have a great impact on farmers' production and income.
1. Effects of manganese on crop growth and development and symptoms of manganese deficiency
1. Manganese is an activator of various enzymes in plants and participates in photosynthesis to promote the formation of chlorophyll and the assimilation of carbohydrates. Therefore, when the plant is deficient in manganese, the symptoms of chlorosis are obvious, which may cause the various metabolic processes of the plant to be blocked, resulting in reduced yield.
2. When rice is deficient in manganese, the plant is short and has few tillers. The leaves are short and thin, severely faded, showing yellow-green color, and finally brown spots appear. The severe spots are connected into strips and finally become necrotic.
3. The corn is deficient in manganese, and the leaves appear yellow streaks parallel to the veins. In severe cases, the central brown long white stripes appear on the leaves, and finally die.
Similar symptoms occur in other crops when manganese is deficient. The application of manganese fertilizer on the soil lacking manganese has obvious yield increasing effect.
Second, the principles and methods of fertilization
1. In addition to the trace element content and crop type of soil, the application of trace elements should also consider the variety of trace elements, the quantity, method and application period.
2, manganese fertilizer as base fertilizer: as a base fertilizer, generally 2.7 square meters of manganese sulfate with 1 ~ 2 kg of fertilizer and farmer fertilizer or other mixed application, can also be applied or acupoint application.
3, manganese fertilizer can be mixed with seeds: 4 to 8 grams of manganese sulfate per kilogram of seed, with a small amount of water to dissolve the manganese sulfate sprayed on the seeds, while spraying and turning and mixing, drying can be sown.
4. Manganese fertilizer soaking: use 0.5~0.1% manganese sulfate solution, soak seeds for 8 hours, fertilizer and seed amount is 1:1, dry and then seed.
5, manganese fertilizer spraying: generally use 0.1 ~ 0.2% manganese sulfate solution, each 667m 'each use of liquid amount of 50 ~ 75 liters, respectively, sprayed 2 to 3 times in the seedling stage, growth period.
1. Effects of manganese on crop growth and development and symptoms of manganese deficiency
1. Manganese is an activator of various enzymes in plants and participates in photosynthesis to promote the formation of chlorophyll and the assimilation of carbohydrates. Therefore, when the plant is deficient in manganese, the symptoms of chlorosis are obvious, which may cause the various metabolic processes of the plant to be blocked, resulting in reduced yield.
2. When rice is deficient in manganese, the plant is short and has few tillers. The leaves are short and thin, severely faded, showing yellow-green color, and finally brown spots appear. The severe spots are connected into strips and finally become necrotic.
3. The corn is deficient in manganese, and the leaves appear yellow streaks parallel to the veins. In severe cases, the central brown long white stripes appear on the leaves, and finally die.
Similar symptoms occur in other crops when manganese is deficient. The application of manganese fertilizer on the soil lacking manganese has obvious yield increasing effect.
Second, the principles and methods of fertilization
1. In addition to the trace element content and crop type of soil, the application of trace elements should also consider the variety of trace elements, the quantity, method and application period.
2, manganese fertilizer as base fertilizer: as a base fertilizer, generally 2.7 square meters of manganese sulfate with 1 ~ 2 kg of fertilizer and farmer fertilizer or other mixed application, can also be applied or acupoint application.
3, manganese fertilizer can be mixed with seeds: 4 to 8 grams of manganese sulfate per kilogram of seed, with a small amount of water to dissolve the manganese sulfate sprayed on the seeds, while spraying and turning and mixing, drying can be sown.
4. Manganese fertilizer soaking: use 0.5~0.1% manganese sulfate solution, soak seeds for 8 hours, fertilizer and seed amount is 1:1, dry and then seed.
5, manganese fertilizer spraying: generally use 0.1 ~ 0.2% manganese sulfate solution, each 667m 'each use of liquid amount of 50 ~ 75 liters, respectively, sprayed 2 to 3 times in the seedling stage, growth period.
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