Application effect of Kang Zunsu on strawberry in greenhouse

Kang Zhuangsu is a biological protein preparation isolated and developed by Cornell University in 1992 from P. oleifera. It can induce allergic reactions in plants and stimulate plant resistance. 1. Test Overview The strawberry varieties tested were “Fengxiang”. They were transplanted and planted on September 1, 2001. The ridge height is 15cm, the ridge distance is 100cm, the ridge surface is 45cm wide, 2 rows per ridge, row spacing 18cm, plant spacing 12cm, planting. The density is 10,000 plants/mu. The experiment was carried out on a strawberry in a greenhouse in the Panqiao Agricultural Demonstration Park in Ouhai District, Wenzhou City. No strawberries or Solanaceae vegetables were planted within 10 km of the test field. The test agent was 3.0% Kangzhongsu powder, which was provided by Nanjing Agricultural University. The experiment was carried out with a total of 4 treatments of concentrations of 15, 30, 60 μg/m1 and a blank control (sprayed water). On January 8, 2002, the strawberry leaves 8-11 leaves, and the base is sprayed with water when it is 10%. At that time, the outside temperature was about 12 ° C, and it was 5-6 days after spraying. It was sprayed once every 14 days and sprayed twice. 2. Test results (1) Promoting plant growth 51 days after the first drug, the strawberry in the spraying area grew vigorously, and the stems and leaves increased significantly. (2) Significant increase in fresh fruit production After the application of Kang Zhuangsu, the number of strawberry fruit was increased, the fruit increased significantly, and the yield increase effect was obvious. According to the investigation, the average 100-segment fruit of the three treatment zones of 60, 30, 15μ/m1 was increased by 9.1%, 15.2%, and 4.2%, respectively, and the average fresh fruit weight was 1555, 1583, and 1540g, respectively. The control increased by 11.9%, 13.9%, and 10.8%. The total yield of 100-segment fruit and 100-fruit fruit in the three treatment zones of 60, 30, and 15 μg/ml was increased by 21.0%, 29.1%, and 15.0%, respectively. There was no significant difference between the spraying of Kangxiu 60 and 30tμg/ml, but it was better than that of Kangxiu 15μg/m1. The difference between the two was significant. The concentration of Kangxiu 15μg/ml was compared with that of the control. There was no significant difference; there was no significant difference between the fresh weights of the three concentrations of Kangzhongsu, but the difference was significant compared with the blank control. (3) Reducing the risk of gray mold in the seedling stage Gray mold is one of the main diseases affecting the yield of strawberry. According to each examination, the effects of three concentrations of Kang Zongsu 60, 30 and 15 μg/ml on gray mold are respectively 60.38%, 70.88%, 46.89%. The results of analysis of variance showed that there was no significant difference in the control effect of Kangxiu 60 and 30μg/ml on strawberry gray mold, and the effect of Kangxiu 30μg/m1 treatment on strawberry gray mold was better than that of Kangsusu 15μg/ M1, the difference is significant. 3, summary test results show that greenhouse strawberry spraying 2 times in the flower bud stage can improve the quality of the strawberry, promote plant growth, improve disease resistance, which is better treated with Kang Zhuangsu 60, 30μg / m1, generally The average yield increased by 21.0%, and the control effect against strawberry gray mold was above 60.38%. At the same time, Kang Zun Su is non-toxic and non-polluting. It is easy to spray and easy to be accepted by farmers. It is easy to promote. It is recommended to use 30μg/m1 in the production.

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