奇米影视7777久久精品人人爽,高清无码中文字幕在线观看视频,麻豆妓女爽爽一区二区三,色翁荡熄500篇

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.

乱人伦人妻精品一区二区| 欧美又大又粗无码视频| babescom欧美熟妇| 寡妇张开腿让黑人捅爽| 久久久精品波多野结衣AV| 被多人玩弄的烂货| 把女邻居弄到潮喷的性经历| 少妇做爰免费视看片| 少妇一晚三次一区二区三区| 欧美精品乱码99久久蜜桃| 免费国产黄网站在线观看视频| 15学生初次破初视频免费| 亚洲成色WWW久久网站| 精品人妻无码一区二区三区不卡 | 久久99精品久久久久久噜噜 | 少妇AV一区二区三区无码| 婆岳同床双飞呻吟艳妇无边| 黑人60厘米全进去了| 局长含着秘书的小奶头| 快穿之胸大喂奶h| 无码人妻精品一区二区三区夜夜嗨 | 国产精品伦一区二区三级视频 | 被黑人伦流澡到高潮hnp动漫| 欧美性大战xxxxx久久久| 女人被爽到呻吟gif动态图| 久久天天躁狠狠躁夜夜躁2014| 狂猛欧美激情性xxxx大豆行情| 青青青伊人色综合久久| 夜夜嗨av一区二区三区| 欧美人与动人物牲交免费观看| 妺妺窝人体色www在线小说| 51久久成人国产精品麻豆| 国产成人精品综合在线观看| 久久久无码精品亚洲日韩按摩| 十大色情禁片免费观看影片| 国产精品乱码一区二区三区 | 丰满人妻熟妇乱又伦精品| 人妻少妇精品无码专区动漫| 又黄又爽又色的视频| 妈妈的朋友在线观看| 爽爽爽男女爽视频免费|