Precautions: (1) Chicken manure or pig manure should be applied after being mixed with lime, superphosphate, etc., and the peanut bran is mixed with pesticide carbofuran or methylisophosphorus to avoid underground pests and prevent "burning roots". †(2) For the orchard of sandy soil, it is advisable to apply organic fertilizer to improve the soil properties and enhance the ability of retaining fertilizer and water retention. Fluorescent Brightener BA Optical Brightener BA,Fluorescent Brightener OBA,Optical Brighteing Agent BA,Fluorescent Whitening Agent BA FORING IMPORT & EXPORT CO.,LTD , http://www.foringfor.cn
C. I. 113 CAS: 12768-92-2
Molecular formula: C40H42N12O10S2Na2
Molecular weight: 960.94 (as international relative atom mass 2005)
Max UV absorption wavelenghth: 348nm
brilliant blue purple. Soluble in water. In neutral or alkaline dyeing bath dyed cotton with the staining, especially suitable for peroxide bleaching solution in use; Also used to discharge. Can be used for cotton, wool, silk, nylon as well.
Application:
Mainly applied to whiten paper pulp, surface sizing, coating, and also applied to whiten cotton, linen and cellulose fiber as well as cellulose fabrics, and to brighten light-colored cellulose fabrics.
Fertilization techniques before and after lychee fruit picking
Litchi is a tree species that requires a lot of fertilizer. The amount of fertilizer applied before and after fruit picking accounts for more than 60% of the annual fertilization amount. As the growth and development of litchi fruit matures, it consumes a lot of nutrients in the tree. In order to restore the tree potential as soon as possible and extract the strong autumn shoots in time, it is an important task at this stage to apply proper fertilizer in a timely and appropriate amount. Generally, trees with weak fruit or weak trees are suitable for harvesting before harvesting; trees with less fruit or strong trees can be harvested. Fertilization before harvesting is about half a month after harvesting, and post-harvest application should be applied before pruning.
The types of fertilization mainly include quick-acting fertilizers, especially nitrogen fertilizers. Commonly used are ammonium carbonate, urea, etc., together with fertilized organic fertilizers (chicken, pigs, pigeons, etc.) or peanut bran.
The amount of fertilizer applied can be determined according to the age of the tree, the tree potential, the amount of fruit hanging in the year, the need to cultivate autumn shoots, and the soil fertility. An annual output of 50-100 kg of trees, 1.5-2 kg of ammonium carbonate or 1.5-2.5 kg of urea, plus peanut bran, 4-5 kg ​​or 15-20 dry fat such as chicken, and then a small amount of phosphorus and potassium fertilizer. Such as superphosphate 0.5-1 kg, potassium nitride 0.5-0.75 kg.
The fertilization method is mainly based on land fertilization. Under the canopy drip line, the circular ditch is digging 30 cm (deep) × 20 cm (width). After fertilization, the soil is covered to reduce the volatilization; if conditions are available, the bean bran, peanut bran or chicken can be used. Fertilizer and other water-fertilizers are applied when they are immersed for 30-40 days or when they are fully decomposed and have no acid odor. Applying before leaching, combined with heavy fertilizer after harvesting, the effect is more ideal; for trees with too much fruit or weak tree, in addition to soil re-fertilization, it should also spray complex nucleotides 2-3 times. (spray once every other week) to promote early shoots and restore the tree as soon as possible. When the last tip turns green, a compound nucleotide should be sprayed once, which is beneficial to the maturity of the mother branches and make the leaves more robust.
Total 1 | <First <Prev 1 Next> Last> |
share to: