First, characteristics
This variety is a mid-spring hybrid variety of spring soybean in China. The growth period is about 130 days, the plant height is 90-95cm, the plants stand upright, the plant shape is compact, the number of main stem segments is 17-19, the branches are 1-3, and the main stem is scarred. In the main, there are more than three pods, round leaves, white flowers, and gray hairs. The seeds are round, and the seed coat is yellow and shiny. The hundred grains weigh about 21 g.
Second, the main features
Changnong 16 has excellent quality and has been tested by the Ministry of Agriculture Grain and Product Quality Supervision and Inspection Center: crude fat content is 23.44%, crude protein content is 38.54%, and fat content is the first breakthrough in certified soybean crops in Jilin Province from 2001 to 2007 (23.0%) The high-oil soybean varieties increase 2~3% compared with imported soybeans, which is 3~4 percentage points higher than that of common domestic soybeans.
Strong resistance to stress, artificially inoculated by the plant protection institute of Jilin Province Academy of Agricultural Sciences and field natural identification: anti-soybean leaf spot disease, anti-soybean mosaic disease, mid-resistance to soybean borer.
Third, the output performance
1. Preliminary test
In 2002, preliminary tests were conducted on soybean varieties of Gongzhuling, Changchun, Tonghua and Jilin in Jilin Province with an average yield of 2711.4kg/hm2, an average 9.7% increase from the control variety Jiunong 21, and the second highest number of listed varieties (20). .
2. Regional test
From 2001 to 2002 in Jilin Province, Changchun, Tonghua, Jilin, Yanbian and other 14 medium-range soybean varieties regional trials, 13 points increase production, one point reduction in production, the average yield of 3129.6kg/hm2, compared with the control variety 9 Nong No. 21 increased its output by an average of 5.0%, ranking first in the test.
3. Production test
In 2002, in Panzhihua, Yushu, Shuangyang, Yongji and Dehui mid-mature group soybean production trials, all five performances increased production with an average yield of 3031.2kg/hm2, an average increase of 12.5kg/hm2 over the control variety Jiunong 21 , The first test breed, the highest yield of 3512.0kg/hm2.
4. Test demonstration
Changnong 16 is well received by the majority of growers for its outstanding features such as high oil and high yield. In 2003 Dehui Agricultural Technology Extension Station introduced the test and demonstration of 8860 hectares of Changnong 16 to reach 3860kg/hm2, an increase of 18.7% over the control variety. In 2005, 20 hectares of Changnong 16 improved breeding farms planted on Huifeng Farm in Jiagou Town, Dehui County, and the output of agricultural science and technology achievements fund project experts reached 3942kg/hm2, which is more than 15% higher than the general variety, and Changnong 16 high. The soybean planting area accounts for about 65% of the total soybean area in Dehui.
Fourth, cultivation technology
1. Selection
Suitable for flat, fertile, medium-greater fertility plots to avoid ridge thinning, mountainous areas, heavy ploughing, and planting plots.
2. Fertilization
Apply 15,000 to 20,000 kilograms of organic fertilizer as base fertilizer per hectare, combined with one-time application of soil preparation; apply 150 kg of phosphoric acid diamine and 30 kg of potassium fertilizer as seed fertilizer, deeply apply 4 to 5 cm of planting, and avoid seed fertilizer in the same place to avoid burning seed. .
3. Sowing
In the period of 125-130 days in Jilin province, the suitable sowing period is in late April or early May. The seed selection before sowing is to remove the diseased grains (patterns, mottled and irregular grains on grains), insects, impurities, etc. The seeding rate is 50~55 kg/ha, sowing or ridge twin broadcasting, the method uses precision, equidistant on demand.
4. Density
About 180,000 strains of preserved seedlings per hectare, according to proper adjustment of fertility, follow the principle of fertilizer should be thin, the principle should be thin.
5. Control
After deferment of fertility (dwarf plants, slow growth), with urea 15 kg / ha, plus potassium dihydrogen phosphate 1 kg / ha, spraying 750 kg of foliar spray; found in July, plant length, lodging plots, with 2.3.5-Triiodobenzylamine 75 g/hectare, add alcohol, dissolve and spray 525~725 kg foliar.
6. Management
Strengthen field management, timely scoop, when the small seedlings arch the soil, the cotyledon has not yet been unfolded, carry out a deep plow before the shovel; when the pair of single seedlings is not unfolded, artificial isometric seedlings are used, and the plant spacing is 7~8cm per plant; 6 In early July, locust spotting was found to be harmful. When the leaf rolling rate reached 3% or more than 3,000 plants were over 3000 heads, 40% Dimethoate EC was sprayed at 1500-2000 times; in the middle of August, the field adults were grouped into soybeans in the early evening. For the best period of prevention and treatment of borer disease, 80% of diuretic stock solution is fumigated at 1.85-2.25 kg/ha, or 2.5% of deltamethrin EC is applied at 0.375-0.45 liters/ha for foliar application; Timely irrigation; timely harvesting and threshing after maturity.
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