Fertilizers are food crops. Has received no land is water, less land is close many fertilizer. Inadequate or fertilizers during the growth of hunger status, it is impossible to yield. Potato are high-yielding crops, more fertilizer required. Fertilizer plants is sufficient to reach the highest growth rate, the corresponding maximum tuber production. Nitrogen, phosphorus and potassium elements in three potato fertilizer required most, followed by nitrogen, phosphorus less necessary.
Nitrogen. Effects of nitrogen fertilizer on potato plant stem elongation and leaf area increase has an important role. Appropriate application of nitrogen fertilizer to promote bell potato foliage lush green color and is conducive to photosynthesis, and nutrient accumulation of tuber yield and improve the protein plays a significant role in accounting. Although nitrogen fertilizer is made potato healthy growth and high-yielding but important application of fertilizer will cause excessive结薯delay resulting leggy plants, affecting production. Moreover, leggy branches and leaves also vulnerable to disease attack, this will result in greater yield loss. In contrast, such as nitrogen, then the potato plant growth adversely, short stem, small leaves or light green leaf color green branches less, early flowering, lower plant leaf litter, such as early symptoms, the final result of weak growth potential of plants, yield is very low. Early detection and timely topdressing缺氮plants, can be turned into low-yield to high yield. Practice has proved that too much nitrogen fertilizer deficiencies are more difficult to control than nitrogen. Reactive nitrogen found in the seedling stage due to lack of nitrogen topdressing can be supplemented, and found that nitrogen addition to controlling excessive irrigation, other methods difficult to effect. Usually caused by irrigation and control of stem and leaf wilting, the impact of normal growth. Therefore, nitrogen has the attention of appropriate facilities, not sure when the seedling stage would rather not base fertilizer topdressing excessive.
Phosphate. Although phosphate fertilizer during their growth in the potato less necessary, but the healthy development of plants are an important and indispensable fertilizer. Especially potato fertilizer can promote root development, so it is very important fertilizer. Phosphate rechargeable seedling development of robust, have to promote the precocious, enhance quality and improve tuber storability role. Insufficient phosphate potato plant growth and development of slow, short stem leaf size, photosynthesis, growth potential weak bad. P deficiency when there are no special symptoms of tuber appearance after incision potato brown meat often锈斑. With the degree of phosphorus deficiency weight gain, to expand the锈斑, when cooking meat锈斑Office potato crisp without seriously affecting the quality of soft.
Potash. Potassium potato seedling growth and development are an important element. Adequate potash plant growth robust, solid stem, leaf thickening, organizations dense, disease-resistant and strong. K is also the promotion of photosynthesis and starch formation has an important role, potash fertilizer often have to extend the maturity, but the tubers, and high yield. Potassium deficiency when the potato plants internodes shortened, developmental delay, leaves become smaller, the leaves appear bronzed in the late lesion, leaf bending down, plants lower leaves early blight, root underdevelopment, shortened stolons, tubers small, low output, bad quality , when the potato cooking easy呈灰black meat.
In addition, the potato is also required calcium, magnesium, sulfur, zinc, molybdenum, iron, manganese and other trace elements, the lack of these elements, it can cause disease and reduce production. However, the vast majority of the soil is no shortage of these elements, so in general do not need fertilization.
Nitrogen. Effects of nitrogen fertilizer on potato plant stem elongation and leaf area increase has an important role. Appropriate application of nitrogen fertilizer to promote bell potato foliage lush green color and is conducive to photosynthesis, and nutrient accumulation of tuber yield and improve the protein plays a significant role in accounting. Although nitrogen fertilizer is made potato healthy growth and high-yielding but important application of fertilizer will cause excessive结薯delay resulting leggy plants, affecting production. Moreover, leggy branches and leaves also vulnerable to disease attack, this will result in greater yield loss. In contrast, such as nitrogen, then the potato plant growth adversely, short stem, small leaves or light green leaf color green branches less, early flowering, lower plant leaf litter, such as early symptoms, the final result of weak growth potential of plants, yield is very low. Early detection and timely topdressing缺氮plants, can be turned into low-yield to high yield. Practice has proved that too much nitrogen fertilizer deficiencies are more difficult to control than nitrogen. Reactive nitrogen found in the seedling stage due to lack of nitrogen topdressing can be supplemented, and found that nitrogen addition to controlling excessive irrigation, other methods difficult to effect. Usually caused by irrigation and control of stem and leaf wilting, the impact of normal growth. Therefore, nitrogen has the attention of appropriate facilities, not sure when the seedling stage would rather not base fertilizer topdressing excessive.
Phosphate. Although phosphate fertilizer during their growth in the potato less necessary, but the healthy development of plants are an important and indispensable fertilizer. Especially potato fertilizer can promote root development, so it is very important fertilizer. Phosphate rechargeable seedling development of robust, have to promote the precocious, enhance quality and improve tuber storability role. Insufficient phosphate potato plant growth and development of slow, short stem leaf size, photosynthesis, growth potential weak bad. P deficiency when there are no special symptoms of tuber appearance after incision potato brown meat often锈斑. With the degree of phosphorus deficiency weight gain, to expand the锈斑, when cooking meat锈斑Office potato crisp without seriously affecting the quality of soft.
Potash. Potassium potato seedling growth and development are an important element. Adequate potash plant growth robust, solid stem, leaf thickening, organizations dense, disease-resistant and strong. K is also the promotion of photosynthesis and starch formation has an important role, potash fertilizer often have to extend the maturity, but the tubers, and high yield. Potassium deficiency when the potato plants internodes shortened, developmental delay, leaves become smaller, the leaves appear bronzed in the late lesion, leaf bending down, plants lower leaves early blight, root underdevelopment, shortened stolons, tubers small, low output, bad quality , when the potato cooking easy呈灰black meat.
In addition, the potato is also required calcium, magnesium, sulfur, zinc, molybdenum, iron, manganese and other trace elements, the lack of these elements, it can cause disease and reduce production. However, the vast majority of the soil is no shortage of these elements, so in general do not need fertilization.