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The physiological effects of boron in plants can be roughly divided into the following aspects: participating in the metabolism and transport of sugars in crops; inhibiting the biosynthesis of phenolic compounds and lignin; promoting pollen germination and pollen tube growth; and promoting the growth of seeds and fruits. Development; affects cell division, differentiation, and maturation; participates in the metabolism of auxin hormones; promotes plant uptake of calcium.
The general symptoms of boron deficiency. Growth point necrosis; damaged vascular bundles, impaired root development; abnormal growth of branches at the top of the crop; abnormal leaves; fruiting and fruiting at the stage of crop growth; poor crop insemination and fruit formation; fruit deformity and abortion of seeds, growth period delayed; Impaired yield and poor quality.
Boron deficiency and remedies. The best way to determine the boron requirement for crops is through soil testing or tissue analysis. When boron is deficient, it can be remedied by applying a solid or liquid borate-containing material to the bed of the annual crop or the foliage of the perennial plant. It is also possible to spray perennial or annual crops with boron-containing solutions. According to the domestic application of boron fertilizer tests for many years, for boron sensitive crops, the application of boron fertilizer increased production by up to 20%, and for other crops, application of boron fertilizer increased the industry up to about 10%.
Boron fertilizer varieties. Domestic industrial borax, boric acid; imported foreign special-purpose boron fertilizer.
Boron fertilizer application technology:
base fertilizer. Use 0.5kg-1kg of boron fertilizer per acre, mix fine dry soil with 10kg-15kg, and apply ditch or apply a hole to the soil before sowing. Do not allow boron fertilizer to contact seeds.
Foliar spraying. Use 0.2% borax aqueous solution or use 0.1% Solubor, boric acid aqueous solution, water 50 kg -80 kg per acre in the rape seedlings, bolting period, flowering time each spray; cotton buds, early flowering period, flowering period of each spray once; The leguminous crops were sprayed twice or three times during the seedling and flowering stages; the sugar beet seedling stage, the luxuriant stage, and the root stage each sprayed once; the tobacco seedling stage and long-term spray were sprayed twice to three times; the sunflower was seen through the flowering stage. 3 times; fruit trees flowering period, flowering period each spray 1 times; vegetable leaf spray mainly, seedling period, flowering period or the ball stage spray once.
If you want a good vegetable and bo
In order to obtain high-quality vegetables and fruits in agricultural production, balanced fertilization is the key, apart from the quality of the seeds. In recent years, although the fertilization levels of nitrogen, phosphorus, and potassium have increased year by year, farmers have not paid enough attention to trace element fertilizers, especially boron fertilizers. The application of boron fertilizer is very important for improving vegetables and fruit products and quality.