精品乱人伦一区二区三区,国产精品不卡一区二区av,图片带文字霸气,下一篇中文字幕人妻精品

Welcome [ Wuxi Beirun Blower Manufacturing Co., Ltd. ] official website!

Position:Home > NEWS >

Roots blower in the aquaculture industry

I produced the Roots blower is to learn from the domestic and foreign design of advanced experience, to optimize their own design, the product through the impeller on the use of new lines, so that further enhance the efficiency of the volume, with small size, large flow, low noise, Efficient energy-saving, smooth operation of the characteristics of the following Xiaobian to introduce you under the Wuxi Roots blower in the aquaculture industry applications:
First, nursery facilities
China's shrimp nursery pond nursery pond is generally made of glass fiber rectangular tank or cement pond, the volume of 10 to 15 cubic meters. Seedling water must be 2 to 4 times the filter, monocytosis culture water treatment more stringent. Diesel boilers or coal boilers, with hot water circulation. Roots blower with inflatable.
Second, the kind of shrimp cultivation
Selection of healthy and no damage, weighing 50 to 60 grams of shrimp, male and female ratio of 1 to 1: 1 into the indoor sink storage stocking density of 4 to 5 tail / square meter, water temperature 26 to 27 ℃ salinity of 33 ~ 35, the daily storage pool for about 50% of the water, and inflated, storage pool covered with a black shading network, the pool light is less than 100 lux. Feeding fresh oysters, squid, frozen silkworm and other erbium material, Shrimp weight of about 10%.
Third, artificial ripening and fine pod transplantation
Male and female shrimp gonads are fully mature, mating. Mating, the male shrimp excretion of fine pods in the female shrimp chest between the first 3 to 4 pairs of foot (satisfied seminal vesicle position), mating after a few hours, female shrimp began to lay eggs , Sperm at the same time release sperm, in the water to complete fertilization.
Most of the way to take the kind of shrimp let the natural mating way, and then select the mating of the female shrimp, into the incubation tank or cement pool spawning hatching.In this way, although the mass production of shrimp, but need more shrimp. In South and Central America, Penaeus vannamei also adopted artificial ripening, sperm artificial transplant technology for artificial breeding, the effect is also better.Technical techniques are as follows: from the natural sea area collected shrimp, after a period of time to keep, to be fully adapted to the pool environment In the future, that is, artificial crowded eye operations, the first species of fish will be caught into the inflatable black barrels, and then the male and female shrimp are squeezed to the right eye, the operation should be carried out in the water and then the eye of the shrimp back to the original pool Continue to cultivate .After a period of time holding, to the eye of the species of shrimp will be mature, this time artificial transplanting sperm. South American white shrimp open type of seminal vesicle in the first 3 to 4 pairs of foot between the sexual maturity of the male shrimp , The seminal vesicle was milky white. Artificial transplantation of fine pods, to be selected high maturity of the male shrimp, in its fifth step foot to the thumb several times to push, fine pod that is, and then the pods attached to the female shrimp And carefully put the female shrimp into a small black barrel , Until spawning, fertilization. Barrel inflatable small amount to prevent Spermatophore off. Use shading black shading net on the barrel. Welcome to buy my company's Roots blower.

国产制服丝袜在线第一页| 九九热五十熟妇人妻精品| 公车上疯狂高潮呻吟摸揉| av天堂成人毛逼| 欧美丰满少妇一区二区三区| 久久久久精品无码免费看| 少妇bbw搡bbbb搡bbbb| 肏逼免费看| 下一篇中文字幕人妻精品| 放荡的女教师3在线观看| mariskaxxxporn| 天天操夜夜操天天天夜夜天| 黄色大片真人| 菲律宾男男gay1069| 古溪剧浦浦| 欧美猛男男男激情videos| 亚洲av少妇高潮24p| mm157美女大尺度写真| 中文字幕a一二三在线| 亚洲又粗又大又黄| 人妻少妇偷人精| 青青草原网站在线免费观看| 久久精品国产亚洲精品2020| 免费看亚洲黄色电影| 久久夜色精品亚洲噜噜国产av| 女生黄色片| 激情艳妇裸体舞| 欧洲成人午夜精品无码区久久| 久久精品一区二区无卡顿| 久久无码综合| 惩罚给她最粗的玉势h| 精品日韩中文久久久久人妻| 精品国产综合成人亚洲区| 青娱乐亚洲视频| 欧美日韩在线有码中文字幕| 怼屄无码免费视频完整版| 亚洲国产精品一二三区| 欧美亚洲一区二区三区精品| 精品久久久久久免费动漫| 国产精品欧美日韩经典三级| 竹菊久久久久久久蜜桃|