蔬菜节水灌溉指标的研究现状及存在问题.pdf

<p>»18 »2 ùÄl¹ u j8“,Ð ¹Tþ ¡M1 , ¹ÊB8¥1“xص“ÿ+¥&gt;+Ä。 £sr 、±þ#Ìâ b £s¥Y÷°¤,ír-ö/î £s ¶n,7 Oö Ñ i b A9v,h121»2 ù Ùy ü©: v« £9÷S¥ùîC#iÙ5v ? 3。 6BZ ëÑ i v ¡Bî¸ Ñ ®,Ñ ¡¥KÅy Í&amp;shy;B,®Ñ ùv 9 £ªª ¹Ñ/7 Ê®,7 O®¿®Ñ ù £ ÷ ÆKÅ, PÑ i =、¹ÑÉ ù¤ë¯7YTþ¥ 3É?â。 îùîÑ i v« £9ÃÇÇ «£¥ “¥, H9 £sªÄ5 Øùî。Cµ¥ v9 £ H ù¥ùî³ % I ¹ H©9 £¥Ù5,99 ¥Ù5γ1ÉB¥ùî。y¹Xµ¥ùî s9Ã¥ £ jç¥ö1y Í。21 W,áS vÕ±&lt;|T¹Bñ j&lt;Ï¥ 55&lt;®.d j&lt;VC j&lt;,á Î 7Z v©« £9÷S¥ùîA¥÷¹Å çA1。 IÓD:1 &nbsp;S ¹¹ v ¡Ð )Äö1 R.ÏSóÐö, : 1996. 12.2 fÐ,¦. jB9 £ç-¥ ç J. £&#39;÷Ð £ æýñ, 1994, ( 4): 8- 24.3 &nbsp;S j&lt;/ w&lt;9_. v« £9Ã/ M .Ø:ÏS j&lt;ñ, 1992. 1- 20.4 &nbsp;d¤B. v £s 3 ØÐ9÷S¥ùîÉZ J.É v, 1989, ( 2): 1- 4.5 V an der Veken L. Optimization of the water application in greenhouse tomatoes by introducing a tensionmeter-controlled drip-irrigation system J. Scientia Horticulture, 1982, 18: 9- 23.6 &nbsp;Smajstrla A G, Locascio S T. Tensiometer-controlled, drip-irrigation scheduling of tomato J. 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Y. 1976: 1- 22.37 &nbsp;B Ñ. jB9Ãð Ø 5×+ñ&#39;Ù5¥ ± IÐ ì J.9à £, 1992, 11( 3): 1- 8.The present Studying situation and existing problems ofwater-saving irrigation index for vegetableLI Jian-ming, ZOU Zhi-rong, WANG Xiao-yan(Department of Horticulture, Northwest Sci-Tech UniversityofAgriculture and Forestry, Yangling, Shaanxi 712100, China)Abstract: Water-saving study concerning vegetable cultivation is showing more andmore importance with the ever increase of vegetable growing area. In this pater, thepresent situation of index study on irrigation quantity and starting point, the depth ofwater-contained soil, frequency of irrigation and irrigation maximums are stated, com-mented on and analyzed; main problems in water-saving irrigation for vegetable are alsopointed out.Key words: vegetable; water-saving irrigation; present situation; problems123»2 ù Ùy ü©: v« £9÷S¥ùîC#iÙ5</p>