8 kinds of insecticides on the control effect of A

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8 kinds of insecticides on the control effects of Aphis citricola

036 average equivalent yield 8248kg/hm. , No. 2 wine list than the control yield was 21.7, reached a significant level, ranking the first l bits of the tested varieties,[link widoczny dla zalogowanych], stable and good adaptability, disease resistance is strong, determined in the province suitable for high altitude areas west and central plant . Key words: Gansu Province; maize; new varieties; regional test CLC number: $ 513 Document code: A Article ID :1001-1463 (2006) 09-0014-02 purpose of this study was to identify the breeding units in our province breeding or the introduction of new maize hybrids in high altitude areas of high yield, yield stability and adaptability for the species provide the basis for validation and extension. 1 Materials and methods 1.1 Materials tested a tested material for FC 254, L216, L217 (Mountain 西利玛格兰 specialty crops research and development Co., Ltd.), 2035 Golden Harvest, Golden Harvest 2036 (silver Golden Harvest Seed Co., Ltd.), with jade 133 (Celebration of Jiuquan City Seed Co., Ltd.), Wo Agricultural Research 302 (Jiuquan Bosch Wo Agricultural Seed Co., Ltd.), the wine list 2 (CK) (Jiuquan City Agricultural Science.) 1.2 test site and method of testing a total of 4 points, respectively Linxia Agricultural Science (Linxia County, two county recreational pilot), dry agricultural center Dingxi City, Seed Management Station Weiyuan commitment. Linxia and recreational point cultivation with film mulching, Weiyuan, will be used in open field cultivation of West Point, arranged in randomized blocks, repeated 3 times. The optimum planting density is generally taken to local density. Harvest area of each plot to take the middle line 3 line 5,[link widoczny dla zalogowanych], remove the two ends, the test species, the total paid-producing area of 17rn. The Order of the pilot field management level by the local field. 2 Results and analysis 2.1 growth seen from Table 1, the average growth of the tested varieties was 137 ~ 148d, the control wine list 2, a growth period for the 145d, a precocious than the control Wo TARI 302, 133 with Jade , FC254, and L217, respectively, compared with control early 8,7,4,[link widoczny dla zalogowanych],4 d, and the control of other species of considerable growth. 2.2 Economic characteristics and disease resistance seen from Table 1, No. 2 wine list height as 208cm, ear 86cm, plant height than the control of a Golden Harvest 2036, L217, Received :2005-12 -27 * About the author: Zhou Yu Dry (1979), male, Gansu Silver, research interns, mainly engaged in maize breeding. Tel: (0931) 7612385; (O) l3893665619. - BU - BU - BU - + 4O9 / 5 isocarbophos control effect of EC 2000 times the lowest,[link widoczny dla zalogowanych], 66.O5. 3d control effect after the drug is still 4O dragon treasure pure EC 2000 times and 2000 times the control effect of avermectin best control effect of 85.45 and 84.63, respectively, followed by drug A 1O EC 2000 times, efficacy was 83.18,2 O e cyhalothrin EC control effect 2000 times the lowest, 77.27. after drug 7d 9O.oo control effect more than 3 kinds of fungicides, namely, EC 2000 times 4O dragon treasure, pure and 2000 times Abamectin EC 2000 times 1O drug A, followed by 3 acetamiprid EC 2500 times, efficacy was 88.59,20% E cyhalothrin EC control effect 2000 times the lowest, 82.37. 14d after the drug survey results show that pure avermectin 2000 times,[link widoczny dla zalogowanych], 4O God Longbao EC 2000 times, 1O% EC 2000 times poison control effect of A Home for the first three fungicides were 93.94,92.97 and 91.52, followed by 39 / 5 acetamiprid EC 2500 times, efficacy was 89.04,2 O e cyhalothrin EC control effect 2000 times the lowest, 83.14. on the 14d of the anti-drug effect after the introduction of new multiple range method for statistical analysis of results showed that pure Avermectin products 2000 times, 40 times Dragon Po EC and other treatments in 2000 were significant differences between the other agents tested were significantly different. 3 Summary and discussion see from the above results, pure strains Avi Su 40 Dragon Po cream, 3 acetamiprid EC and 10 EC is not only drug A good quick result, the persistence of long and low toxicity, natural enemies have a protective effect, is the ideal pollution-free agents, can be used as replace the currently used to 2O E cyhalothrin EC as the representative of pyrethroid pesticides and to 4O represented omethoate EC organophosphate pesticides in the production of large area application. (This article Zebian: Wang Runqin)