20 November 2004, Volume 1 Issue 6

    

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试验研究
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  Effect of Long-term Stationary Fertilization on Soil Fertility in Plastic-tunnel

  Gao Hui;;Ge Xiaoguang

  . 2004, 1(6): 6-10.

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  This experiment was a succession of long-term stationary fertilizing. Based on the prior treatments of nitrogen fertilizer application, it further included the treatments of applying P and K fertilizer. The findings were as follows: A long-term mono-application of inorganic N fertilizer (without application of organic fertilizer) coursed a decline of the content of organic substance in soil. The more amount of N fertilizer applied, the sharper the organic substance declined. The mixing application o...
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  Study on Drip Irrigation Index for Tomato Over-summer Cultivation in Greenhouse

  Gao Xinhao;;Zhang Zhibin;Guo Shirong;et al.

  . 2004, 1(6): 11-13.

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  The experiment was conducted to determine the irrigation index for tomato over-summer cultivation in greenhouse. Four treatments were conducted in terms of the substrate water content. The botanical characteristics, yield,quality and water efficiency of tomato were investigated.The results showed that 35 %-40 % was the optimum substrate water content for tomato over-summer cultivation in greenhouse.
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  Analysis of Combining Ability of Early-yield and Total-yield Character of Cucumber Cultivated in Open Field in Spring

  Gu Xingfang;Zhang Shengping;Xu Caiqing;et al.

  . 2004, 1(6): 13-15.

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  The combining ability of early-yield and total-yield character of cucumber were analyzed by using six inbred lines of cucumber cultivated in open field. The results showed that the two characters were mainly controlled by additive genes and their inheritances fit in dominant-additive model mainly. The general combining ability(GCA)variance of early-yield occupied 91.92 % of the whole genotype variance. The board sense heritability is 86.30 % and the narrow sense heritability is 80.39 % for early-yield. The(...
研究论文
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  Rapid Identification Method of Late Bolting Character in Chinese Cabbage

  Yu Yangjun;;Zhang Fenglan;Zhao Xiuyun;et al.

  . 2004, 1(6): 16-18.

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  Seven Chinese cabbage cultivars or lines were used for establishing a rapid identification method of late bolting character by vernalizing the germinated seeds at 3 ℃ for 20 days, then the seeds were sowed and grown in a greenhouse at 20-22 ℃ and 16 hours day length(using 100-130 μmol·m -2 ·s -1 of supplemental lighting in night to provide longer days). The results indicated that time (days) of bud appearance, length of dwarf stem and bolting index were suitable indexes for identification of late b...
试验研究
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  Comparison on Regression Equation of Leaf Area of Chieh-qua

  Song Shiwei;Liu Houcheng;Chen Riyuan

  . 2004, 1(6): 18-20.

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  Liner and exponent function regression equations were established by leaf area with leaf length, leaf width and the product of the both with 11 chieh-qua(Benincasa hispida Cogn. var.chieh-qua How.)cultivars. The results showed that there were significant correlationship between leaf area of each chieh-qua cultivar and its related factors. One-factor liner and exponent function regression equations were considered suitable to estimate leaf area. And a universal regression equation for all cultivars was g...
品种选育
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  A New Pea Variety —‘Baofengdong 8’

  Wang Fengbao;Dong Lifeng;Fu Jinfeng;et al.

  . 2004, 1(6): 21-23.

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  Baofengdong 8, semi-leafless pea, was bred and selected by crossing Zhongwan 6(common pea) with 90- PE-10(semi-leafless pea). It is about 70 cm in height. It has 3 effective brunches, 18 nodes on main stem, 8-12 pods per plant and 6 seeds per pod. The rate of double-pod is above 90 %. 1 000-seed weight is about 208 g. Bottle green stipules are normal, and tendrils developed well. Flowers and pods are white. The seeds are crinkle and green. It takes 101 days from sowing to harvest. Baofengdong 8 has stron...
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  A New Cucumber F_1 Hybrid —‘Jinyu No.5’

  Shi Shunyi;Yang Jialiang;Li Yuling;et al.

  . 2004, 1(6): 24-25.

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  Jinyu No.5 is a new cucumber F 1 hybrid developed by crossing A-8 with Jin3105. It is early maturity, high resistant to downy mildew, powdery mildew and fusarium wilt. Its plant grows vigorously, and it yields 150 t·hm -2 in greenhouse. Average fruit is about 32 cm in length and 150-200 g in weight. Fruits are dark green, sweet and crispy, with white spin and have good quality and high marketable percentage. It shows excellent fruit setting capacity, and mainly setting on the main vine. It is suit...
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  A New Carrot F_1 Hybrid —‘Jinhong No.4’

  Chen Yuanmin;Wang Yong;Zhang Yanping;et al.

  . 2004, 1(6): 26-27.

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  Jinhong No.4 is a new carrot F 1 hybrid. The female parent 10421 is a petaloid male sterility line, and the male parent 3030 is a inbred line. The root is long cylinder shaped, 17.5-18.5 cm in length, 5.0-5.5 cm in diameter, with orange color. Average root weight is 260-270 g. The growing period is 120 days. The yield is 67.5-82.5 t·hm -2 . It is resistant to black rot and is suitable to be consumed both in fresh and processing, and be cultivated in summer in North China.