Fresh peas have a short growing period and are usually planted in the middle and early September. Picking is available at the beginning of November. Planting autumn peas not only helps to increase the multiple cropping index of the land, but also effectively utilizes the light and temperature resources before the winter, and when the fresh oysters are listed, they are in the fall period of vegetables, and the planting efficiency is higher. The average yield per mu is 500-600 kilograms. The output value of mu is about 1,200 yuan, and the yield of high-yield land can reach more than 2,000 yuan. The current autumn cultivation techniques for fresh peas are described below for reference by farmers. 1. Choose good breeds. You can choose dwarf pea varieties such as Zhong Pea 6 and Zhong Pei 4 . The period of autumn sowing of Zhongya 6 and Zhongwan 4 is about 70 days, and no need for scaffolding. Compared with the two varieties, Zhongya 6 is slightly superior to Zhongwan 4 in terms of production and commerciality. 2. Proper sowing. The best time for fresh peas to sow in autumn is from September 5th to 15th. When the seeds are sown prematurely, the temperature will cause the seedlings to die. Even if the seedlings that survived, the flowers that just started to bloom may not be fertilized normally. The yield is very low; when sowing is delayed, flowering, fertilization, and squashing are vulnerable to low temperature and cannot be harvested normally. The risk is high. 3. Closely planted. Dwarf peas are suitable for dense planting. Autumn pea vegetative growth period is only about 27 days, plant height and branch number is only half of winter sowing, it is more closely planted, sowing rate per acre to 17 kg is appropriate, the drought is slightly less seedlings, acres can be sowing Increased to 20 kg, row spacing of 20 to 25 cm, basic seedlings per mu should be more than 60,000. 4. Apply basal fertilizer and skillfully apply fertilizer. After entering the autumn, the temperature drops rapidly, so it is necessary to deal with the short-term vegetative growth period and the accumulation of nutrients. The principle of fertilization can be applied to fertilization by applying "basic fertilizer, early application of Miaofei, and reapplying flower manure." The basal fertilizer can be applied to 30 kg of compound fertilizer in Mushi, and the fertilizer should be prevented from direct contact with the seeds during the application. The field spreading with no-tillage can spread fertilizing material throughout the field. Four-leaf Mushi urea 5 kg, the beginning of flowering Mushi urea 10 kilograms, in order to increase flowers, increase glutinous, increase grain weight. 5. Drought prevention, weeding pest control. Peas are crops that avoid water and drought. If the soil is too dry at the time of sowing, it should be sowed before or during the evening after sowing. The whole quail will be drained after being wetted, and water will be poured before emergence. In the event of drought in the seedling stage and flowering and fruiting stage, furrow irrigation should also be carried out. Before sowing, use 50% acetochlor 60ml or 20% napropamide 200ml per acre before sowing, and 40～50kg of water, and spray the soil surface after mixing evenly. The soil is required to be moist when spraying to improve the efficacy. For fields where weeding is not effective or where weeding is not done in time, we can use grassy weeds to stabilize and kill grass, and broad-leaf weeds or other weeds can be used to supplement the fields. rule. Leafminers, cabbage caterpillars, telophytes and aphids are the main pests of peas and should be controlled at the seedling stage. They can be used to control 2-4 times of dimethoate 1500 times or 1000 times of dichlorvos for 2 or 3 times. Root rot and blight are soil-borne diseases. The first method of prevention and control is the practice of paddy-upland rotation, avoiding continuous cropping of dry land, and the second is the use of carbendazim and other agents for control at the seedling stage. China Agricultural Network Editor
Nootropic Products
In China, nervous system drugs are also one of the drugs with the most rapid sales growth in recent years. In 2002, nervous system drugs occupied 5.9% of the entire pharmaceutical market share, and the total sales amount increased by 9.4%.
With the increasing trend of urbanization and aging, the elderly population in China has exceeded 120 million, and the incidence of geriatric diseases, especially mental diseases, is increasing year by year. With the increase of residents' income, the elderly's requirements for quality of life also increase. As a result, the demand for drugs to treat mental illnesses such as Alzheimer's has soared. In WHO drug classification, psychotropic drugs and nootropic drugs are grouped into one class. We briefly analyzed the development trend of this class of drugs through the clinical drug use data collected from more than 300 domestic key hospitals by Chinese Pharmaceutical Association.
The overall market size of this class of drugs is about 1.22 billion yuan, the consumption sum increased by 5.0% in 2002, but the sales quantity increased by 11.2%. The main reason why the consumption sum did not increase with the sales quantity is that several main varieties of this class of drugs, such as piracetam, cobalt bin amide and ginkgo biloba leaf, etc. In 2002, the price of selling units fell sharply due to bidding. Among these drugs, ginkgo biloba preparation occupies the largest market share, accounting for more than 1/3 of the market share, ganglioside ester and cobalt bin amide combined also occupy nearly 1/3 of the market share, piracetam and other "sitan" drugs occupy nearly 10% of the market share, the rest of the drugs occupy less than 5% of the market share. At present, more than 20 ginkgo leaf production enterprises, piracetam production enterprises more than 70, have entered the stage of price competition, profit repeatedly diluted.
In the first-line varieties, except ginkgo biloba leaves preparation maintained vigorous vitality, the growth of other varieties were weak, especially the traditional variety piracetam suffered from bidding
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