Safflower Extract,Safflower Extract Powder,Flos Carthami Extract Lower Blood Pressure Co., Ltd. , http://www.bjorganicfertilizer.com
Do not apply chicken manure without decomposing. Vegetable growers often use unfertilized chicken manure or other unfertilized organic fertilizers to easily burn roots. The space pepper cultivated by Zhang Guoxin in Fengyi Village, Hualong Town, this fall, is because there is no decomposed cake fertilizer when it is cultivated. As a result, the base of the stem of the plant was burned and rotted, causing root rot of the stem, and a large number of plants died of wilting. The fresh chicken manure that has just come out of the farm has a high carbon and nitrogen content. It must be accumulated in the dug pit for a period of time (the shallower the better, the better), and then used after high temperature fermentation.
Two bogey base fertilizer reuse micro-fertilizer. Due to the low price of trace elements, many vegetable farmers like to mix a variety of trace elements when applying base fertilizer. In fact, this effect is not good, and the cost is increased. For example, iron-containing fertilizers are applied to the soil because iron is easily converted into poorly soluble trivalent iron ions by the air in the soil and loses its fertilizer effect. If foliar spray is applied, 0.1% to 3% of ferrous sulfate solution is evenly sprayed on the vegetable leaf surface, which is easily absorbed and has a good effect. It is recommended to apply trace elements to the soil to spray liquid micro-fertilizer.
Three bogey containing chlorinated fertilizer. Because of the cheap price of potassium chloride, many vegetable farmers use it in greenhouse vegetables. This is not true because chloride ions can reduce the starch and sugar content of vegetables. Decrease the quality of vegetables. The yield is reduced; and the chloride ion remains in the soil, which can lead to acidification of the soil, which is likely to cause decalcification of the soil and cause soil compaction. Potassium chloride should be applied as potassium sulfate. Especially for the beet, watermelon, potatoes and other melons that avoid chlorine.
Four bogey base fertilizers are used less. Vegetables generally require more potassium fertilizer before and after flowering, and gradually decrease later. It is recommended that in addition to the large amount of Organic Fertilizer used in the base fertilizer, it is necessary to re-apply potassium fertilizer, which can be applied in depth to facilitate the absorption and utilization of vegetable roots. At the same time, combined with the application of potassium fertilizer before and after flowering, the demand for potassium fertilizer in vegetables can generally be reached.
Five bogey use diammonium phosphate as top dressing. Diammonium phosphate is a binary compound fertilizer containing 18% nitrogen and 46% phosphorus pentoxide. Vegetables require large amounts of nitrogen and potassium and require less phosphorus. For example, eggplant requires a ratio of NPK to 3:1:4, cucumber is 5:2:6, tomato is 7:2:8, and diammonium phosphate contains 18% nitrogen and 46% phosphorus, excluding Potassium, so it is not advisable to apply more diammonium phosphate in the greenhouse, otherwise the accumulation of available phosphorus in the soil will inhibit the absorption of potassium fertilizer.
Phosphorus is easily fixed by chemical reaction with calcium, iron and aluminum in the soil and is difficult to use. It is recommended to apply the phosphate fertilizer as base fertilizer or foliar spray.
Six bogey of ammonium sulfate, ammonium bicarbonate. Ammonium sulphate is a physiologically acidic fertilizer. It will increase the acidity of the soil and destroy the soil structure after application. Therefore, in addition to the proper application in alkaline soil, it is best not to use a large amount of ammonia after the application of ammonium bicarbonate in neutral and acidic soils. Gas, when the ammonia reaches a certain concentration, it can cause the burning of leaves, which is unfavorable for the growth of vegetables, especially in the case of poor wind shed in the winter greenhouse.
Vegetable cultivation in greenhouses is a high-input, high-output production method. The reporter learned in the process of interviewing in the countryside that there are some misunderstandings in the fertilization, which affects the value of the seed, so I will remind everyone here. Pay attention to the scientific fertilization.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】