How to use boron fertilizer?

How to use boron fertilizer? How many ways to apply boron fertilizer? What problems should be paid attention to when using boron fertilizer? The following farming help planting network is briefly introduced for netizens' reference. First, boron fertilizer use method 1, dip in the root: borax 0.05 ~ 0.15kg per mu, dissolve a small amount of water (40 ℃ hot water), then add fine soil and water to make a paste, dip in the root when transplanting rape or other crop plants. 2. As base fertilizer: 0.5 kilogram borax per mu, mixed with fine dry soil, phosphate fertilizer or nitrogen fertilizer, and applied to cotton or other crops when sowing or transplanting. Once applied, the fertilizer effect can last for 2 ~ 3 years, and the yield is generally increased by more than 10% in the current season. Boron mud as a base fertilizer is more, the price is low, the amount of about 15 kg per mu, can be mixed with organic fertilizer. Citrus, apple and other fruit trees, each with 1.5 kilograms of boron mud. When making base fertilizer, it must be applied evenly to avoid crop poisoning caused by excessive concentration of boron in local areas. The boron mud is alkaline and contains magnesium (MgO) 3040%, which is suitable for southern soil. 3. Seed soaking: soak the seeds with 0.02-0.05% borax or boric acid solution, soak the corn and sorghum seeds for 4-5 hours, soak the wheat seeds for 3 hours, fish out and dry (do not burst in the sun) and sow the seeds. Legume crops and crops grown on saline-alkali soil should not be soaked in seeds. 4. Seed dressing: 0.5 grams of borax or 0.5 grams of boric acid per 0.5 kg of seeds. When the seeds are mixed, it is better to absorb all the solution and sow the seeds after drying. 5. Foliar spraying: borax 0.05kg / mu or boric acid 0.05kg / mu is used, and 50 kg of water is added after melting (spray concentration is between 0.1 and 0.2%). Foliar spraying is carried out after 4 pm on a sunny day. The amount of solution depends on the size of the seedling, most of the seedlings are sprayed, and the seedlings are sprayed less. Boron fertilizer directly affects the development of crop reproductive organs and should be applied as soon as possible. The running ability of boron in plants is poor, so it is better to spray it many times. For example: rape 2-3 days before cutting, 100 grams of borax per mu of seedling bed, mixed with 50 kilograms of aqueous solution for spray, can improve the survival rate. Bolting can be sprayed for 2 or 3 times from bolting to early flowering. Cotton should be sprayed at the bud stage, and it is better to spray it for 2 or 3 times every half month. Fruit trees are better sprayed in the young fruit stage and full flowering stage, and can also be sprayed with Bordeaux solution and 0.5% urea. 0.2-0.3% borax or boric acid solution can be used. Matters needing attention in the use of boron fertilizer in the preparation of borax or boric acid aqueous solution, it should be fully stirred, and then poured into the sprayer after all borax or boric acid is dissolved. Do not put borax or boric acid directly into the sprayer, so as not to affect the effect. There is little difference in the concentration of boron deficiency, moderation and excess among crops, so special attention should be paid to the amount and application techniques of boron fertilizer, especially in sandy soil, because the buffering performance of sandy soil is poor. In production, the seeds soaked because of the high concentration of boron fertilizer can not emerge, and the poisoning caused by the application of boron fertilizer is often seen after the application of boron fertilizer, which should be paid attention to. It is reported that some factories do not pay attention to the safe treatment of boron mud residue or boron-containing wastewater, which causes the content of water-soluble boron in soil and groundwater to exceed a certain limit, resulting in poisoning and reduction of crop production, sometimes without harvest. People and livestock who drink boron-containing well water exceeding the standard will get boron enteritis. Boron poisoning crops are also sensitive to floral organs, such as incomplete pollination, baldness, increase of blighted grains, deformity of fruits and vegetables and so on. In the middle stage of growth, the edges of maize leaves and melon leaves form a very clear closed yellow edge, which is a special symptom of boron poisoning. Generally speaking, vegetable crops suffer more seriously than cereal crops, especially cucumbers. Using cucumber as an indicator of boron damage (golden closed edge on the edge of leaves), more accurate information can be obtained. The above is the planting network to introduce the use of boron fertilizer and matters needing attention, if you have a better supplement, please leave a message below to let us know.