Results The size of the longan tree was quite obvious. The main reason was that the result was the result of flowering and flowering at the top of the mother tree. At the same time of fruit development, the side buds of the mother tree could not sprout summer and autumn shoots, resulting in no heading and flowering in the second year. Great reduction, forming a small year. Therefore, in order to overcome the annual size of the longan tree, in addition to the selection of grafted seedlings, the strengthening of integrated management and the prevention and control of pests and diseases, it is also necessary to sparge spikelets in an appropriate manner to ensure the flowering results while having a certain number of strong summer shoots.
The time for the sparse spikes is from before and after clearing to the valley rain. When the flower head is 12-15 cm in length, the buds are obviously not open. During sparse cutting, we should master the principle of “living at the top of the trees, staying at the bottom, staying at the periphery, staying in the interior for a long time, and leaving the dragons (going to the strong branches) to stay deputy and distribute evenlyâ€. The strong tree vigor and high management level can spam 30% of the time. - 50% weak branches, 50% - 70% sparse management level. Usually 50 kilogram longan tree leaves 50-100 bunches of flowers.
Synthetic organic reagents such as potassium ethylxanthate for the detection of nickel, copper and molybdenum; Aluminium was examined by morin; Nitrite was detected by diazo coupling reaction. Cobalt was detected by α-nitroso-β-naphthol. Test nickel with dioxime. Organic reagents are widely used in analytical chemistry, mainly used in solvents, precipitants, complexing agents, indicators, chromogenic agents and surfactants. In order to adapt to different analytical needs, some reagents are sometimes needed to be purified, liquid organic reagents are often purified by distillation, solid substances are purified by crystallization or sublimation. Substances with high vapor pressure, that is, purified organic reagents that do not decompose at low boiling points and boiling temperatures, are usually distilled at atmospheric pressure; For less volatile and slightly soluble substances in water that is purification boiling point higher or boiling temperature decomposition of organic reagents can be used to reduce pressure distillation or steam distillation.
2 7-Naphthalenedisulfonic Acid Disodium Salt,Butyl Isobutyrate,N-PROPYLBENZENE,Butylchloroformate
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