extensive feeding 中文意思是什麼
extensive feeding
解釋
粗放飼養-
As one of the contracted agricultural technology extension project in shanxi province, the jinnan cattle feeding and management technical package exte nsion project, assigned by science and technology committee of shanxi province i n 1999, directed on the problems, such as extensive cattle feeding and managemen t, low sale percentage of commercial beef cattle, low meat production, low repro ductive survive rate of cows and poor economic returns, to increase the scientif ic contents and economic returns of cattle industry by adopting technical packag e including beef cattle crossbreeding, beef cattle feeding and management, cow ' s feeding and nutrition, calf raising, stover processing, and supplementation for grazing cattle in winter and spring etc
「晉南牛飼養管理配套技術推廣」是山西省科委1999年度下達「山西省農村技術承包」項目，其目的是針對我區廣大農戶養牛飼養管理粗放、商品牛出欄率低、產肉率低、母牛繁殖成活率低、經濟效益差等缺點，通過採用肉牛雜交改良、改良肉牛飼養管理、加強母牛飼料營養、犢牛培育、秸稈氨化、放牧牛冬春補飼等配套技術，達到提高養牛業科技含量，增加養牛業經濟效益的目的。 -
It is believed that the search behavior of the third instar larva of e. balteatus de geer is extensive search before feeding, and is area - concentrated search after feeding. 8. contacting with aphid, eating an aphid and contacting with agar block with aphid body fluid on it can arouse searching behavior of e. balteatus de geer larva from extensive search to area - concentrated search, and contacting with agar block can not
8 .明確了和蚜蟲接觸、完全取食1頭蚜蟲及和沾有蚜蟲體液的瓊脂塊接觸等食物刺激均可激發黑帶食蚜蠅幼蟲搜索行為由廣域型轉換為地域集中型，而和瓊脂塊接觸則不能刺激其搜索行為轉換。
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