Hybrid vegetables cannot be preserved. Many of the hybrid vegetable seeds used in current production are produced. Offspring produced by sexual crosses tend to be superior to their parental traits, that is, heterosis. Such as cabbage, cabbage, onion, pepper, cucumber, radish, watermelon, carrot, tomato, eggplant and so on. The use of hybrid generation seeds has significant yield-increasing advantages, as well as other economic traits such as early maturing, high quality, etc., which play an important role in production. However, hybrid vegetables cannot be preserved. This is because the hybrids begin to segregate from the second generation, resulting in inconsistent growth, reduced preponderance, and reduced yield. Therefore, the production of vegetable hybrids can only be applied for one year and cannot be continued.
The use of hormones ripening rice should not be preserved. At present, in order to improve the land utilization, many localities sow early autumn and winter sowing of crops, and use plant growth regulators such as “90%â€, ethephon and other hormones to spray rice to achieve Early maturing and early harvesting purposes. In hybrid rice seed production, it has been found that the use of "nitrogen" and other hormones is inappropriate, which has an impact on the germination rate of hybrid rice seeds. The use of ethephon ripening rice will have no effect on the seed germination rate and germination potential, and whether or not it will cause variation in rice varieties after treatment with ethephon. Although researchers have not done relevant tests, it is not clear that ethephon is used to treat rice. It is best not to use rice that has undergone ethephon ripening as a species in order to avoid unnecessary losses.
Before the hybrid cotton could be preserved, the Hunan cotton district had used the Xiangzamian No. 2 cross 2 (F2) as a seed in cases where the supply of hybrid cotton seeds was in short supply. However, with the improvement of seed production techniques, it is best not to use hybrid second-generation (F2) seed at the present time when the first-generation seed of hybrid cotton satisfies supply. This is because cotton is an out-of-breed crop, and the out-crossing rate in the field is between 7% and 9%. The yield and resistance of hybrid second-generation cotton seeds are certainly worse than one generation. Therefore, it is not advisable to promote the use of cotton. In addition, for conventional cotton, Fusian and late autumn peaches, peaches are not suitable to leave the species; sprayed ethephon cotton is not fully developed, can not be planted; in the cement field drying cotton, machinery Damaged cotton should not be preserved; cotton seeds stored for too long and cotton seeds stored together with pesticides and chemical fertilizers have a sharp drop in germination rate and cannot be used as seed; some cotton farmers have not changed new varieties for years Only about 70% to 80% of the quality is severely degraded, and continued use will inevitably lead to a reduction in production and a decline in quality.
ETR Oxygen Cylinder Filling System
By PSA principles, ETR PSA oxygen generators generate 93%±2% purity oxygen gas directly from compressed air. ETR oxygen cylinder filling plant is consisted of Atlas Copco air compressor, Parker dryer and filters, air buffer tank, ETR Psa Oxygen Generator, oxygen buffer tank, oxygen receiver tank, diaphragm oxygen booster, filling station and control cabinet.
Compressed air is purified through the air dryer and filters to a certain level for main generator to work with. Air buffer is incorporated for smooth supply of compressed air thus to reduce fluctuation of compressed air source. The generator produces oxygen with PSA (pressure swing adsorption) technology, which is a time proven oxygen generation method. Oxygen of desired purity at 93%±2% is delivered to oxygen buffer tank for smooth supply of product gas. Oxygen in buffer tank is maintained at 4bar pressure, then reach to 150bar to filling cylinders with an oxygen booster.
Oxygen Cylinder Filling System
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