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  • Symptoms of crop zinc deficiency?

    Symptoms of crop zinc deficiency?

    Symptoms of crop zinc deficiency: first, it appears in the old leaves, the growth is inhibited, the plants are short, the internodes are broken, the tillers are few or delayed, the leaf veins lose green, and there are albino symptoms. Maize and rice were sensitive to zinc deficiency, followed by dicotyledons potato, tomato and sugar beet; Perennial fruit trees are sensitive to zinc, such as citrus, grape, peach and apple. Zinc deficiency has a great impact on fruit quality.

    2022-03-17316
  • Crop molybdenum deficiency symptoms?

    Crop molybdenum deficiency symptoms?

    Symptoms of molybdenum deficiency in crops: first appear in the leaves in the middle of the old leaves or stems, and gradually develop to the young leaves and growth points. The plants are short and grow slowly. The leaves have yellow or orange spots of different sizes. In serious cases, the leaf edges wither, the leaves twist into a cup, and the old leaves thicken, scorch and die. Leguminous crops have the largest demand for molybdenum, and cruciferous cauliflower and cabbage also have high demand for molybdenum. Molybdenum fertilizer also had a great effect on the quality of winter wheat.

    2022-03-17318
  • Nutritional function of molybdenum fertilizer?

    Nutritional function of molybdenum fertilizer?

    The nutritional functions of molybdenum include: it is a component of nitrate reductase and nitrogenase; Promote photosynthesis and respiration; Promote the metabolism of organic phosphorus compounds; Promote the construction of reproductive organs.

    2022-03-17314
  • Relationship between magnesium fertilizer and crop yield

    Relationship between magnesium fertilizer and crop yield

    According to the magnesium status of soil in South China, the fertilizer effect of magnesium fertilizer on more than 20 crops was studied, and rich production data were obtained. The test results showed that the yield of tobacco, sugarcane, rape, soybean, sweet potato, pepper, tomato, citrus, pineapple and banana increased by 285.0, 8850.0, 105.0, 120.0, 1035.0, 4485.0, 5655.0, 3705.0, 300.0 and 1665.0kg per hectare respectively. The results showed that the application of magnesium fertilizer co...

    2022-03-17302
  • Principle of comprehensive action of factors?

    Principle of comprehensive action of factors?

    Crop yield is the result of the comprehensive action of nutrients, water, varieties, management and other factors. Although there is a leading factor that restricts the growth and development of works to a certain extent, we must pay attention to the positive and negative interaction between various factors at the same time.

    2022-03-17307
  • What is the basis of scientific fertilization?

    What is the basis of scientific fertilization?

    The scientific application of fertilizer should first be based on the above four fertilization theories and aim at high yield, high quality, high efficiency, no pollution and improving the fertile soil. It should not only be based on the nature of fertilizer and the characteristics of crop nutrition, but also consider the factors such as soil fertility, cultivation system (scientific fertilization under plastic film mulching, scientific fertilization under different rotation systems and intercro...

    2022-03-17279
  • How to determine the amount of fertilizer?

    How to determine the amount of fertilizer?

    The determination methods of fertilization amount include fertility zoning (grade) matching method, target yield matching method, field experiment matching method, computer recommended fertilization method, nutrition diagnosis method, etc. The target yield matching methods include nutrient balance method and soil fertility difference subtraction method; The field experiment methods include fertilizer effect function method, nutrient abundance and deficiency index method, nitrogen, phosphorus and...

    2022-03-17306
  • Scientific management of fertilizer?

    Scientific management of fertilizer?

    Fertilizer can be used alone or mixed with each other, or even mixed with herbicides and pesticides. Some fertilizers, such as carbon and ammonia, are unstable and easy to volatilize. Some fertilizers are easy to agglomerate and reduce fertilizer efficiency under high temperature and high humidity conditions. Therefore, the conditions of high temperature and high humidity should be avoided during the storage and transportation of fertilizers.

    2022-03-17272
  • Chief leading expert on stage - the first online live broadcast of

    Chief leading expert on stage - the first online live broadcast of "citrus planting communication seminar" was successfully held

    From August 2 to 3, the online activity of "communication and Discussion on suitable planting of Citrus" hosted by the national modern agriculture (Citrus) industrial system and undertaken by Hubei GreenKel Agricultural Technology Co., Ltd. was successfully carried out. Professor Deng xiuxin, chief expert of national modern agriculture (Citrus) industry technology system and academician of Chinese Academy of engineering, took the lead in teaching, researcher Liu Jianjun, chief expert of citrus b...

    2022-03-17294
  • Mr. Larry won the

    Mr. Larry won the "Yellow Crane Friendship Award" in 2011

    Wuhan municipal government has made a decision to determine the list of "Yellow Crane Friendship Award" in 2011. There are 8 winners in total, from Britain, France, Germany, Japan, South Korea and the United States. Among the experts, Mr. Larry, chairman of Wuhan Ruilai fertilizer Co., Ltd., a wholly American owned company, won the award. Mr. Larry came to China for the first time in August 2004 and brought the advanced agricultural fertilization technology of the United States to China. Greenca...

    2022-03-17304
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