In recent years, the water - saving and control irrigation technique of rice has diverted from plot experimental and demonstration to lare scale. and has got remarkable economic and social benefits. amed at the characteristics of this irrigation area, optimal selection for water - saving techniques of rice, deciding the amout of leaching water and irrigation modles, investigating the adaptability of the water - saving and control irrigation technique in saline land. studying the increase in production mechanism of the technique are important to extend the technique, to better and develop saline land as well as slick spots. according to the results of field experiments, optimization study was conducted on the water - saving irrigation technique of rice in saline land, the effects of different water - saving irrigation techniques on the physiological indexes and yield of rice were systematically analyzed. by using mutiplepurpose fuzzy optimization method, better. water - saving irrigation technique was selector out, that is. the control irrigation technique in rice. the mechanism of it was analyzed from the aspect of the physiological and ecological saving water of rice to provide the implemental process and technical point ; throgh the quantitive analysis and comparision on control irrigation and control class ( flood irrigation ), high production and quality mechanism of the technique was analyzed in terms of physiology indexes of rice, the variation of soil moisture, the pest resistance and the lodge resistance, the change of soil temperature in paddy fields. the yield constitutive factors, the quality of rice and so on. in saline land. control irrigation and intermittent leaching modles were adopted to validate the adaptability of the technique in irrigation of rice in saline land, to analyze rice ' s physiological - ecological indexes and the change of soil salt content under the conditions of control irrigation leaching of rice and and to provide control irrigation and combined modle of intermittent leaching to adapt to different conditions
本文從試驗及試驗資料入手,取得以下主要成果和結論:對鹽
堿地水稻節水灌溉技術進行優化研究,系統
地分析了不同節水灌溉技術對水稻生理指標及產量的影響,採用了多目標模糊優化的方法,對灌水技術進行綜合評判,優選了節水灌溉技術,論證該
地區宜採用水稻控制灌溉技術;闡述控灌技術通過調節和控制水稻的需水規律,降低水稻高產情況下的無效水量消耗,從水稻生理、生態節水兩方面分析了控灌技術節水機理,針對性
地總結出水稻各生育期實施節水控灌技術的步驟及技術要點;通過控灌與淹灌的定量對照比較,從根系、莖蘗、冠層葉片及綠葉動態到株高,土壤水分變化,抗病蟲害、抗倒伏能力,稻田土溫變化,產量構成因素及稻米品質等諸多方面進行動態比較,分析控灌技術高產優質機理;在鹽
堿稻
地採用控制灌溉+間歇淋洗模式,跟蹤測試田間水鹽變化狀況,驗證控制灌溉技術在鹽
堿地區水稻灌溉中應用的適應性,通過分析水稻控制灌溉淋洗條件下水稻生理生態指標,提出優化控制灌溉+間歇淋洗組合模式,為進一步在高礦化度
地區試驗水稻控灌技術奠定基礎。
Rice, one of the three major crops in the ningxia irrigation area of yellow river. is widely planted. the traditional irrigation techniques of rice are flood irrigation and deep storage. which need more water consumption and have higher application volumes. with the increase in population, the development of industrial and agricultural production and the uniform catchment agreement for the water resource of yellow river, the supplying and demand contradiction of the water resources in ningxia is more evident, then drang is presented for developing water - saving and efficient agriculture
近年來,水稻節水控灌技術在寧夏引黃灌區推廣后取得了顯著的經濟和社會效益。但如何確定節水控灌技術是現有條件下適合寧夏引黃灌區特別是鹽
堿耕
地的水稻種植先進灌溉技術,如何確定鹽
堿地的淋洗水量及灌水模式,探索節水控灌技術在鹽
堿地的適應性,研究水稻節水控灌技術增產機理,對進一步推廣水稻節水控灌技術及改良、開發鹽
堿地和鹽
堿荒
地具有重要意義。
Both the leaf of lespedeza dahurica ( laxm. ) schindl. and the leaf of sophora flavescens ait. which live in the alkaline land of songnen plain, and the leaf of amorpha fruticosa linn. which grows in the land for salt enduring species sieving were made into paraffin sections
對生長在松嫩平原鹽
堿地( ph = 8 . 5 - 9 )上的興安胡枝子和苦參的葉,以及生長在當
地抗鹽樹種篩選試驗田( ph = 8 . 5 - 9 )上的紫穗槐的葉製作了石蠟切片,並對這些切片作了光鏡觀察和結構植物學分析。
Waterlogged and alkaline areas were marked down for special attention
易澇
地區和
堿地都被標了出來以便特別注意。
Associative nitrogen - fixing bacteria in the rhizosphere of avena sativa in an alpine region isolation and identification
蘭州
地區鹽
堿地小麥根際聯合固氮菌分離及部分特性研究
The sea - blite plants covering the alkaline beach look like brilliant corals, dyeing the entire beach red
覆蓋著鹽
堿地特有的植被- -
堿蓬草。一簇簇好似出水的珊瑚,放眼望去恰如一片紅色的海洋。
Soil improvement greening design and plant selection for the garden with saline soil
鹽
堿地園林改土綠化設計及花木選擇
Questions on aquaculture technique in saline and alkali area
鹽
堿地水產養殖技術100問二100
Growing in saline or alkaline lands, and dry or semi - dry areas, some species are highly adaptable to coldness, dryness and saline or alkaline lands
由於賴草屬植物常生長在鹽
堿地和乾旱半乾旱的山坡、
地埂,該屬植物的有些物種對寒冷、乾旱、鹽
堿土等不良環境具有高度的適應性。
Jujube culture in high density for high yield
鹽
堿地棗密植豐產栽培
Techniques of culture whiteleg shrimp penaeus vannamei with saline - alkali groundwater
鹽堿地下水南美白對蝦養殖技術