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 Wysłany: Śro 10:22, 16 Lut 2011 Temat postu: Different sowing dates on yield of maize varieties |
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Different sowing dates on yield of maize varieties
Is consistent. The grain number, by multiple comparisons for the 49 strong, B3 and B2, Bl sowing significantly different, B3, B5,[link widoczny dla zalogowanych], B6 three sowing treatment was not significant, Bl, B2, B4, B5, B6 five broadcast of the difference was not significant, in which the grain number B3 treatments the most, 651.7, and each stalk, Bl treatment was the lowest for 580.4 / per ear. Compared Tunyu 6, the corn sowing grain number in all not significantly different between the maximum of the B2 treatment, as 578.5, per ear, at least the B6 treatment for 524.5 each ear. For grain weight, can be seen from Table 5, strong 49 in the Bl, B2, B3, B4 four sowing treatment was not significant, B5, B6 treatment of two sowing dates were not significant after the first four sowing dates and two sowing of the difference was significant, the highest grain weight for the Bl treatment, as 424.0g, the lowest B6 treatment, as 390.0g. Tunyu No. 6 seeding in the B6 and Bl significant difference of treatments, B6, B2, B3, B4, B5 five sowing treatments was not significant, Bl, B2, B3, B4, B5 five sowing dates were not handled was significant, the highest grain weight for B6 sowing treatment, was 292.9g, the lowest for the Bl treatment, as 268.9g. Thus the output of each treatment were calculated, can be seen from Table 5, strong 49 treatments at different sowing dates, B3 sowing the highest yield for 11149.2kg/hm, the lowest B5 treatment for 9760.1kg / hm, sowing date treatments yield of the order: B3> B1> B2> B4> B6> B5, that the prosperity of the late 49, the optimum sowing date (B3) to achieve high yield, early sowing than in late sowing production must be high, this is probably also due to early sowing maize plants relatively long growth period, the material accumulated two more reasons, but planting too late, due to high temperatures, rapid growth,[link widoczny dla zalogowanych], but also easy to meet high temperature, drought and other natural disasters , resulting in different levels of cuts store. Tunyu 6 different sowing treatments was not significant, the highest yield is B3 treatment, as 8569.2kg/hm2, the lowest for the B1 treatment, as 7777.5kg/hm, yield under different sowing dates in the order of treatment : B3> B2> B4> B6> B5> B1, also shows the Tunyu 6 is also suitable sowing (B3) under the highest yield, which is 49 strong high sowing the same, but the lowest yield of sowing date and powerful 49 different, it is probably about right with its early character. Overall, the precocious Tunyu 6,[link widoczny dla zalogowanych], the early and late planting is not to increase the yield. To achieve high yield, it is necessary in the appropriate sowing date (B3) seed. 3 Conclusion yield differences between varieties is extremely significant, late-maturing than the early prosperity of 49 high yield Tunyu 6. Sowing date on yield components of three factors spike, grain number and grain weight of not significant, but the comprehensive consideration of three factors, strong Tunyu 6, 49 and are the highest yield in the third sowing date, respectively, 11149.2kg/hm2 and 8569.2kg/hm2. The results show strong and Tunyu 49 6 April 22 are the most appropriate sowing,[link widoczny dla zalogowanych], early and late sowing will result in production. Overall,[link widoczny dla zalogowanych], with the delayed sowing, yield a downward trend.
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