Paddy field interplanting wheat, wheat is planted before rice is harvested, and rice is harvested afterwards, so it is possible to strive for seasons to ensure proper early sowing of wheat. Both old rice and early wheat are correct, and rice and wheat are both high in yield. Sowing the appropriate amount of rice cornice.

1. Select varieties, pharmaceutical mix (dip) species. The roots of the rice cultivars were shallowly distributed, and varieties with strong lodging resistance, strong antifreeze ability, and compact plant type were selected. Before sowing, use chemical control agent to mix (dip) wheat seed, dwarf and increase wolfberry, control prosperous and strong, per kilogram of wheat seed soaked with 15% paclobutrazol wettable powder 1 g seed dressing or 100-150 mg/l paclobutrazol solution. When dressing, it is necessary to pay attention to mix well to prevent the local drug volume from being too large and affect the growth of wheat seedlings.

2. Suitable for broadcast. Grasp the rice-wheat symbiosis period 7-10 days, sowing in the appropriate period of early sowing of wheat, to ensure that when harvesting wheat Qimiao (1 leaf 1 heart), conducive to the formation of strong seedlings. It is not advisable to blindly sow early, so as to avoid the long symbiotic period and the formation of weak seedlings.

3. The amount of uniform broadcast. Interplanting wheat early sowing early, but vulnerable to damage when the harvest rice seedlings, so the appropriate increase in the amount of sowing, the appropriate sowing amount between the constant sowing and precision sowing, between 8-10 kg per mu, using mist spray Kinds of methods to ensure uniform sowing.

4. Fertilizer kit fight full seedlings. Before harvesting rice, about 15 kilograms of fertilizer will be applied per acre, and about 10 kilograms of urea will be ensured to ensure “rich in the fetus” and achieve early-onset and strong seedlings. 1-2 days before sowing or sowing, use herbicide mixed with urea or wet fine soil in the rice leaves when there is no dew when the uniform application of pesticides, keep the field moist after the accumulation of water. Pay attention to the use of paclobutrazol and other seed dressing fields to avoid the use of drugs during the bud, especially the soaking of white wheat seeds to broadcast before the drug is appropriate to prevent phytotoxicity. Interplanted wheat fields that have not been removed before and after sowing are removed after 6-7 days after the rice is cut and when the grass age is 2-3 leaves.

5. Early coverage to promote strong seedlings. It is generally advisable to cover organic fertilizers in the post-harvest rice seedlings, where multitude of 1500-2000 kg of soil-fertilizer per hectare or 150 kg of rice straw is covered. 3 leaves and 1 heart period combined with the three-groove supporting and mechanical excavation of intra-territorial trenches, appropriate to increase the density of open trenches, uniform mud cover 1-2 cm thick.

6. Scientific fertilization against premature aging. Early application of strong fertilizer, base (sets) fertilizer deficiency Miaofei. Overwintering and returning to the green period, the amount of seedlings that lacked seedlings or fallen off the yellow field was balanced (relay) to catch yellow ponds and promote balance. Replanting jointing booting fertilizer, generally about 15 kilograms per acre with urea, to pour 3 leaves and flag leaf phase of two applications is better, to prevent late dehydration premature aging, increase seed-setting rate and 1000-grain weight, to seize the key to high wheat yield.

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Chinese herbal medicine chemistry refers to the science of using modern chemical theories and methods to study the chemical composition of Chinese herbal medicine. The object of Chinese herbal medicine chemistry research is the chemical composition of Chinese herbal medicine. The chemical composition of Chinese herbal medicine is very complex, usually sugar, Amino Acid, protein, oil, wax , enzymes, pigments, vitamins, organic acids, tannins, inorganic salts, volatile oils, alkaloids, glycosides, etc. Every Chinese herbal medicine may contain multiple ingredients. Among these ingredients, some of them have obvious biological activity and play a medical role, and are often called active ingredients, such as alkaloids, glycosides, volatile oils, amino acids, etc. The reason why Chinese herbal medicine has medical effects is mainly due to the active ingredients it contains. In addition to many active ingredients of Chinese herbal medicines that have been studied in the past and have been widely used, such as berberine (berberine), which is Antibacterial and anti-inflammatory in Coptis chinensis, ephedrine, which is antiasthmatic in Ephedra, and reserpentine, an antihypertensive ingredient in Rauwolfia, In recent years, more active ingredients of Chinese herbal medicines have been discovered one after another at home and abroad, especially in terms of biological active ingredients for anti-tumor, treatment of cardiovascular diseases and chronic bronchitis. Other ingredients are commonly found in Chinese herbal medicine, but usually have no biological activity and no medical effect, and are called "ineffective ingredients", such as sugars, proteins, pigments, resins, inorganic salts, etc.

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