Boron is an indispensable trace element in plant growth. It can promote the movement and metabolism of sugar in crops, increase the synthesis of sucrose and accelerate the transport of sucrose, thereby increasing the seed setting rate of fruit and the fruit setting rate of fruit trees. Boron can promote the formation and development of reproductive organs. When boron is deficient, seeds cannot develop normally or even form at all, which seriously affects the yield and quality of crops. Boron promotes the formation of cellulose and cell walls, regulates and stabilizes the cell wall structure, and at the same time, it also promotes the elongation and division of cells, which is conducive to the growth and elongation of crop roots. Boron also enhances the ability of crops to resist drought and disease.

Boron deficiency in vegetable crops is common. According to the symptoms, there are four main categories: First, the growth point is atrophied, death, leaf shrinkage, distortion, such as cabbage, spinach, edible beets, lettuce and other seedlings often occur. Second, stem and petiole cracking, short thick, hard and brittle, such as celery's "crack stem disease", the old leaf petiolar tissue cracking, there are a lot of cracks, cracks, brown or black, rough, hard and brittle. The ribs in the leaves of Chinese cabbage leaves are cracked brown. The petiole and leaf veins of the tomato are hardened and become brittle. The onion's tubular leaves are stiff and brittle, and the base produces stepped fissures. Thirdly, the root tissue of fleshy roots and other fleshy roots are browned and corked and hollowed. The typical symptoms of radish, turnip, etc. are “brown heart disease” or “brown heart rot disease”. The appearance of diseased fleshy roots does not necessarily have Obvious symptoms, sometimes local depression, yellowing, dry hard, rough bare root surface of the neck, cracking, fleshy roots dark brown woody plug necrosis area, mainly in the light of plaque spots, severe browning The area can be divided into strips (cross-section), where most of the sites are formed in the formation layer, and the lesions are hardened, and the pungent taste is enhanced. Cooking is not easy and soft. Fourth, fruit and vegetable peels, flesh necrosis, corkation, flowers and not real, such as cucumber fruit center corked; tomato fruit surface rust spots; cabbage ball cabbage, cabbage, broccoli and other retained species often appear to spend but not real .

In addition, vegetables such as cabbage, celery, lettuce, beet, radish, etc. are all more sensitive to boron, therefore, the application of boron fertilizer can achieve a good effect of increasing production and improving quality. The specific application method of boron fertilizer is as follows:

1. As a basal fertilizer: combine application of fertilizers from farmland and nitrogen, phosphorus, and potassium fertilizers at one time, such as 200-400 g of Ba-rich grain boron or 800-1000 g of boron of Futaiwei Granules in the Mu, requiring uniform application and fertilization depth. At 30 to 50 centimeters.

2. Foliar spraying: In the middle period before the growth of vegetables, foliar spraying of thorium boron or Jin Jiapeng 1000 to 1500 times, 2 or 3 times.

3. For vegetables that have experienced symptoms of boron deficiency, apply boron fertilizer in time to grab it until the symptoms are resolved.

Anti-slip PVC Coated Gloves

Brown Anti-Slip Gloves,Anti-Slip Pvc Coated Gloves,Rough Sandy Pvc Glove,Super Wear Resistant Glove

SHANDONG SHUNXING LABOUR PROTECTIVE CO.,LTD , https://www.sdsxlb.com