The appearance is tan, and the cork is red-brown at the flaking; there are intermittent stripes on the branches, nodules are enlarged, and the shape is like a bead. Most of the hard and delicate roots and fibrous roots are born, and some surfaces are smooth and smooth, such as stalks. It is commonly known as "crossing the river branches" or "crossing bridges"; there are brown scales on the upper part, and there are residual stems or petioles that have not been cleaned at the top. The quality is firm and hard, the section is irregular, the skin is dark brown, the wood is golden, the rays are cracked, the central pith is red and yellow, and occasionally hollow. Odorless, very bitter taste, chewing saliva can be dyed red and yellow. It is better to use fat, beaded, solid, red-yellow, no residual stems and fibrous roots.
Valuable Medicinal Plants,Nature Chinese Herbs Radix Coptis,Coptis Chinensis Root Extract,Crude Medical Coptis Chongqing Taisun Pharmaceutical Co., Ltd. , http://www.taisuncoptis.com
Cotton Flower Management
The flowering and bolling period is the period in which cotton grows fastest and needs fertilizer and water is the most. The management of flowering and bolling period is very important for shaping a reasonable plant type, promoting more knots in cotton, making large bells and preventing late maturing, and preventing premature decay. The role. At present, cotton fields in our province have entered the flowering period one after another. According to the classification and management of different cotton fields, it is necessary to seize the cotton harvest. First, pure Chunmian pure Chunmian cotton Most of the use of plastic film cover cultivation, most of them have entered the flowering period in late June, in the cultivation measures are mainly focused on the following: 1, remove the film. In the end of June or early July combined with watering or raining, the film is removed and earthed to prevent lodging and facilitate management in the later period. However, dry land should not be removed without rain. 2, top dressing. Combined with rainfall and soil moisture in the first flowering period of 1/15 hectares topdressing urea 10 to 20 kg, the end of July early August combined with the growth of cotton 1/15 hectares and then topdressing urea 5 ~ 7.5 kg. Top dressing can be applied or applied, but it should be applied to the surface below 10 cm, 25 to 30 cm from the cotton plant. 3, control. When the daily growth of the plant height exceeds 2.5 cm at the beginning of flowering, 1/15 hectares are sprayed with 6 to 10 ml (or 1.5 to 2.5 g) of the booster and 15 to 25 kg of water; 8 ~ 12 ml (or 2 ~ 3 grams shrinkage section) plus 40 kg of water evenly sprayed. Attention must be paid to the use of auxiliaries (or vitamins) in combination with alkaline pesticides. Attention should be paid to changes in weather conditions and weather during spraying. Use less or not during drought, and use more when it is rainy. 4, pest control. When the BT gene-resistant cotton third-generation Helicoverpa armigera more than 20 larvae of more than 20 should be promptly spraying control, and at the same time pay attention to the prevention and treatment of Fuxi, red spider and other pests. 5, Drought resistance. When the 20-40 cm soil moisture content of the cotton field is less than 60%, and no heavy rain is forecasted in the near future, timely irrigation should be conducted. Each 1/15 hectare should be filled with 30-40 cubic meters. Pay attention to timely drainage after heavy rain, so as to avoid water accumulation in the cotton fields after rain. . 6, topping the heart to the heart. From July 20 to July 25, according to the growing trend of the cotton, the upper, middle and upper branches of the fruit branches were beaten in mid-August. Second, the common characteristics of interplanting spring cotton interplanting cotton fields is the development of late, easy to late maturity, early flowering period is mad, long-term, four generations of cotton bollworm emphasis. Therefore, interplanting spring cotton in the management should promote early-onset, late-maturing as the focus of work, flower and bell period management, pay attention to re-apply flower bell fertilizer, do not cover top fertilizer. General interplanting mulch and transplanting cotton See flower, live cotton 1/15 hectares of primary flowering topdressing 10-20 kg of urea, in early August after the growth of the cotton can be sprayed continuously 2 or 3 times, 1.2% of urea or 0.3% Potassium dihydrogen phosphate solution 50 kg, spray once every 7 to 10 days. The second is to pay attention to chemical control. 1/15 hectares of cotton fields with prosperous tendencies are supplemented with 12 millilitres (or 3 grams of shrinkage) and 40 kilograms of water is evenly sprayed. After 8 to 10 days of growth, the cotton fields are sprayed with 8-12 milliliters of strength. Or reduce the safety of 2 to 3 grams), add 35 to 40 kilograms of water spray. The third is to prevent and control four generations of cotton bollworm and other pests. Top management and other management measures are the same as pure spring cotton. 3. Summer cotton Summer cotton refers to the short-season cotton planted after transplanting on May 10th or before and after wheat harvesting. Its budding and flowering are late, the bell-ring period is short, and late-maturing, the fourth-generation cotton bollworm is heavy and the cultivation is promoted. During the flowering and bolling period, many knotted peaches, early autumn peaches, late-maturing and late-stage pests are the focus. 1/15 hectares of topdressing 10-20 kg of urea at the beginning of the flowering period will not be applied on the ground after July 25, and 0.3% potassium dihydrogen phosphate solution may be sprayed once every 7 days. Apply 1 to 15 hectares of herbicidal active ingredient (8 to 12 milliliters) (Zhujiean 2 to 3 grams), and 1/15 hectares of mid- to late-month use of 10 to 12 milliliters of meizinogen (shrinkage). 2.5 to 3 grams) control group tip. In late August, attention was paid to forecasting and controlling four generations of cotton bollworms and other insect pests.