Therefore , it is necessary to establish the system of the multi - component detection on - line for circulation nutrient - liquid . on - line detection of nutrient liquid is used to adjust components concentrations of nutrient liquid in term of variable growth requirement . this research is helpful to provide an efficient approach from greenhouse agriculture to precision agriculture and concentrated agriculture 營(yíng)養(yǎng)液濃度的合理調(diào)配是保證作物健康生長(zhǎng)的關(guān)鍵,因此,營(yíng)養(yǎng)液多組分在線檢測(cè)系統(tǒng)的建立,有利于根據(jù)作物生長(zhǎng)全階段對(duì)營(yíng)養(yǎng)需求的不同進(jìn)行營(yíng)養(yǎng)液的動(dòng)態(tài)合理調(diào)配,為設(shè)施農(nóng)業(yè)走向“精準(zhǔn)農(nóng)業(yè)” 、 “高效農(nóng)業(yè)”提供一條有效的途徑。
Mixing nutrition needs specific control equipments and almost of all the equipments are introducing from overseas in our country now . this paper takes the system of nutrient liquid mixing and irrigating as its study object and the purpose of us is to produce new equipments which have property right and can replace the machines from overseas . based on the study of the characteristic parameters and the principles of realization we designed a new structure for the mixing and irrigating system and we have develop a new system which has quick response , easy operation and stability 無(wú)土栽培技術(shù)以營(yíng)養(yǎng)液的配制和調(diào)控為核心,營(yíng)養(yǎng)液的調(diào)配需用專(zhuān)門(mén)的控制設(shè)備,而目前這類(lèi)設(shè)備仍以國(guó)外引進(jìn)為主,針對(duì)這一情況本課題以營(yíng)養(yǎng)液的配液供液系統(tǒng)為研究對(duì)象,旨在開(kāi)發(fā)一種具有知識(shí)產(chǎn)權(quán)、能替代國(guó)外引進(jìn)設(shè)備的自動(dòng)配液供液設(shè)備,以達(dá)到既符合生產(chǎn)要求又降低生產(chǎn)成本的目的,并進(jìn)而推動(dòng)無(wú)土栽培技術(shù)的發(fā)展和普及。
The technology of soilless culture is a new kind of agricultural technology that can culture crops using nutrient liquid instead of soil . it is a great innovation in human plant method . it has developed quickly throughout the world because it can bring the high - speeding growth , good harvest and high quality of crops 無(wú)土栽培技術(shù)是一種不用土壤而用培養(yǎng)液及其配套設(shè)備栽培農(nóng)作物的農(nóng)業(yè)高新技術(shù),是人類(lèi)種植方式上的一項(xiàng)重大革新,該技術(shù)以其能夠使得農(nóng)作物生長(zhǎng)快、產(chǎn)量高、質(zhì)量好在世界各國(guó)得到迅速的發(fā)展。
The paper introduces the studies and the development of an intellective soilless culture system on mixing and irrigating . the system is closed - circuited and its main controlling parameters are consistence value and acidity value of the nutrient liquid . the system includes switching circuit , analogue input and output circuit , digital integrated circuit , keyboard display circuit , driving circuit , execution mechanism etc . by its modular design the system can automatic mix the nutrient liquid and irrigate 本論文研究?jī)?nèi)容是智能溫室營(yíng)養(yǎng)液配液及供液控制系統(tǒng)的研究與開(kāi)發(fā),該控制系統(tǒng)是以養(yǎng)液濃度和酸度為主要調(diào)控參數(shù)的閉環(huán)控制系統(tǒng),主要包括開(kāi)關(guān)量輸入/輸出電路、模擬量輸入電路、液晶電路、鍵盤(pán)顯示接口電路、設(shè)備驅(qū)動(dòng)電路和執(zhí)行機(jī)構(gòu)等。