Different kinds of vegetables have different requirements for boron, and more boron is needed: radish, turnip, cabbage, cauliflower, lentils, pepper, cabbage, cabbage; moderate boron requirement: tomato, carrot, lettuce; boron demand Less are: cucumber, spinach, onion, leeks. When a certain amount of boron in a vegetable is insufficient, symptoms appear. Such as radish lack of boron suffering from "brown heart disease"; celery is easily broken boron; tomato, pepper cucumber and other boron deficiency, drop serious fruit drop, and easy to produce deformed fruit. In addition to the lack of boron in tomatoes, the stem growth points are often black and dry at the seedling stage, resulting in serious reduction of yield in the later period.
Boron fertilizers currently used are borax and boric acid. It can be used as base fertilizer, seed fertilizer and foliar fertilizer.
(1) When base fertilizer boron is used as base fertilizer, it can be mixed with nitrogen, phosphorus, and potassium fertilizers, or it can be used alone. It is required that the boron fertilizer be evenly distributed in the field with 125-200 grams of pure boron applied per acre. The application of basal fertilizer has a long-term effect on the use of boron fertilizer, and it can generally be applied for 3-5 years at a time. However, the application amount must not be arbitrarily increased to avoid damage to vegetables.
(2) Seed soaking in the seed in the solution of 2 times the amount of seeds, the solution concentration of 0.01-0.1% (borax) is appropriate, time 12-24 hours, remove and wash with water, and then germination, sowing Nursery. When the seed dressing concentration should not be too large, not more than 0.1%.
(3) Foliar fertilizer spray is a commonly used method on vegetables, spray concentration: borax 0.1-0.2%, boric acid 0.01%.
Tomato: Spraying 0.2% borax solution on the first flowering stage and full flowering stage can increase the fruit setting rate and increase the yield by about 15%.
Cauliflower: The 0.2% borax solution was sprayed once at the seedling stage and early flowering stage, generally increasing the yield by about 10%.
Sweet peppers and peppers: Spray with borax 0.2% or 0.1% boric acid solution for 2-3 times at the early flowering stage and full flowering period. You can mention the morning market for 7-10 days, increase production by 15%, and the higher ones can increase production by 20%.
Celery: spraying with 1.2% boric acid solution, increasing production by 12%, and preventing celery “stem disease” Cabbage: spraying with 0.1% borax solution foliar fertilizer to increase production by about 10%.
Black Tea,Tea Leaf,Black Tea Caffeine,Black Tea Coffee
Chunme Tea,Jasmine Tea Co., Ltd. , http://www.nbblacktea.com
没有评论:
发表评论