20 September 1998, Volume 1 Issue 5

    

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试验研究
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  Studies on Absorption and Utilization of Nitrogen under Experiment of Long-term and Fixed Position Nitrogen Application in Vegetable Field

  Ge Xiaoguang;Wang Xiaosue;Liu Xiuru et al.

  . 1998, 1(5): 1-0.

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  蔬菜氮肥长期定位施用; 吸氮量; 氮素浓度; 氮素利用效率;
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  Effect of Shade on Growth and Yield of Ginger

  Wang Shaohui;Zhang Zhenxian

  . 1998, 1(5): 2-0.

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  Effect of different ways of shade on growth of ginger were conducted. The result indicated that mulch with wheat straw increased the yield of ginger significantly,larger leaf area,more and stronger branches were obtained. It was suggested to populize mulching straw in ginger production.
研究论文
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  Regulation of External Homone on Common Bean ( Phaseolus vulgaris L.) Leaf Water under the High Temperature Stress

  Shang Qingmao;Qiao Xiaojun

  . 1998, 1(5): 3-0.

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  This paper studied the effects of different external homone (GA 3 and 6-BA) on the regulation of leaf water and alleviatation of high temperature injury degree of common bean ( Phaseolus vulgaris L.) under high temperature condition. The results showed that,in a short period,the intercellular air spaces increased,leaf temperature became lower and cell membrane injury was alleviated in leaves,however,both external hormone treatment had less effects on leaf diffusion resistance.

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  Studies on the Flowering Habits and the Factors Affecting Pollen Germination in Balsam Pear.

  Shan Pengyi;Hu Kailin

  . 1998, 1(5): 7-0.

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  The flowering habits,pollen germination and pollen storage of palsam pear ( Momordica charantial L. ) were investigated. Female flower opened from 2∶00a.m. through 6∶00a.m. and male flower from 2∶00 a.m. through 7∶00a.m.. The optimum conditions for pollen germination was liquid medium with 10% Sucrose and 0.01% Borie acid under 30℃ for 3 hours. Under 0℃,the pollens had been survived for 36 hours,But only 18.4% pollen germinated under 40℃ for 4 hours. More than 80% of pollens from the opened flowers (5...
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  Toxicity Experiments of Tea Saponin Mixed with Dimethoate against Lipaphis erysimi

  Wang Xiaoyi;Huang Bingqiu

  . 1998, 1(5): 8-0.

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  Toxicity of tea saponin,dimethoate and mixture of the two compounds at different concentrations on turnip aphid Lipaphis erysimi was examined. Results showed that tea saponin itself had low toxicity on turnip aphid,but it could significantly increase the effect of demethoate. Mortality of aphid treated with dimethoate solutions containing tea saponin was higher than that of dimethoate solutions at the same concentrations. The LC 50 s of dimethoate,dimethoate mixed with 500mg/L tea saponin and di...
调查报告
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  Epidemic Prediction of Watermelon Virus Disease

  Li Shaowei;Li Guoheng;Wu Zhanqing et al.

  . 1998, 1(5): 9-0.

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  According to the data collected from 1988 to 1997,watermelon virus disease occurred in Kaifeng,Henan province of China was related to the total quantity of aphides,total precipitation in seedling stage (May and June). A linear model is established including the above two factors.
试验研究
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  Efficacy of Insecticides to Control Plutella xylostella

  Lin Wencai;Guo Shijian

  . 1998, 1(5): 10-0.

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  Laboratory and field trials were conducted to evaluate the efficacy of 19 insecticides,belonging to organophosphorus,synthetic pyrethroid,carbamate,insect growth regulators,antibiotic etc. ,to control Plutella xylostella . The results showed that 14 commonly used insecticides were generally incapable of controlling P. xylostella in Hangzhou China. Avermectin,fipronil,chlorfenappyr,Bt and diafenthiuron were most effective to control P. xylostella.
品种选育
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  Breeding of Sweet-hot Pepper F 1 hybrid ‘Zhongjiao No.10’

  Yang Guimei;Zhang Baoxi;Guo Jiazhen et al.

  . 1998, 1(5): 11-0.

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  Zhongjiao No.10’ is a early sweet pepper F 1 hybrid developed by crossing inbred lines 900013-3 and 78-1-1. The variety is resistant to TMV and middle resistant to CMV. The yield is 37.5 52.5 t/ha,and average fruit weight is 30.9 42.5g. Long fruits with smooth skin are green,and have crisp flesh,light pungency,good quality and high marketable percentage. This hybrid has been extended to Beijing,Tianjin,Hebei,Northeastern China,Anhui,Sichuan and south vegetable production bases such as Guangdong,Guang...
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  Breeding of Processing Tomato F 1 Hybrid ‘Hongza No.14’

  Xu Hejin;Zhou Yongjian;Li Junming et al.

  . 1998, 1(5): 12-0.

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  Hongza No.14’ is a tomato F 1 hybrid developed by crossing Red Agate No.100 as a female parent and 95401 with the netted vircescent (nv) gene as a male parent. The variety is suitable for processing,especially wholepeel and long distance shipment. This variety grows vigorously with high fruit set,beautiful fruit shape and firm flesh. It is resistant to crack and pressure,endurable to transportation. The fruit is intense red,uniform coloring and contains lycopene 9.07 mg/100g fresh weight. It is an early hy...
新优品种
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  New Melon Variety—Lanmi

  Zhang Qin

  . 1998, 1(5): 13-0.

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  Lanmi is a middle mature melon F 1 hybrid. The fruit is oblong,yellow with fine netting when ripe,and weighs about 3.0kg. Thick flesh is light orange,tender,crispy,juicy and very delicious.