Culturing method of perennial forage maize
The technology of a forage corn and its cultivation method is applied in the cultivation field of perennial forage corn, which can solve the problems of poor stress resistance, low forage seed production capacity and forage yield, low technological content, etc. demand, increasing planting scale and planting level, and the effect of high-efficiency cultivation methods
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Embodiment 1
[0025] Embodiment 1, hybrid seed production and biological characteristics of perennial forage corn F80
[0026] 1. Hybrid seed production of perennial forage corn F80
[0027] 1. The maize inbred line 2848, which has a high seed setting rate when crossed with tetraploid teosinte, is used as the female parent, and the maize inbred line 5027, which has a high combining ability when crossed with the maize inbred line 2848, is used as the male parent to obtain the hybrid combination 2848 ×5027 seeds.
[0028] 2. Production of perennial forage corn hybrid F80
[0029] In Xishuangbanna in autumn, the paternal tetraploid teosinte and the female parent 2848×5027 were sown, artificially crossed, and the hybrid F 1 The generation seed is the perennial forage corn seed, named as F80, and the specific hybridization method is as follows:
[0030] 1) Sowing male and female parents
[0031] The sowing time of the male parent is 20-30 days earlier than that of the female parent. The sow...
Embodiment 2
[0042] Embodiment 2, artificial cultivation of perennial forage corn F80
[0043]1. Sowing depth test
[0044] Select plump seeds from the perennial forage corn F80 seeds obtained in Example 1, sow in seedling pots filled with field soil, and set 4 sowing depths (1cm, 2cm, 4cm and 6cm respectively) in each seedling pot , each sowing depth is randomly arranged, and 5 plants are planted at each sowing depth, and there are 8 seedling pots in total. After sowing, the seedling pots are placed in the greenhouse at a temperature of 15-20°C, and the water and fertilizer management is the same as that of ordinary cultivated corn. Four weeks after sowing, the total number of plants and total tillers of each treatment in each seedling pot were counted, and the average number of tillers per plant was calculated. The result is as figure 1 and shown in Table 1.
[0045] figure 1 The sowing depth of each plant from left to right in the middle is 6cm, 1cm, 4cm and 2cm, and the correspond...
Embodiment 3
[0074] Embodiment 3, artificial cultivation of perennial forage corn F80
[0075] Select plump seeds from the perennial forage corn F80 seeds obtained in Example 1, and sow them in field soil at an altitude of 400 meters in Xishuangbanna on September 10, 2010. The sowing depth is 3.5 cm, and the spacing between plants and rows is 32 cm. Apply 10 kg / mu of Stanley pure sulfur-based compound fertilizer to the bottom fertilizer hole, and topdress 20 kg / mu at the jointing stage, and the rest of the management is the same as that of ordinary cultivated corn. Plant 10m per density 2 (cell), 3 repetitions. When the plant height reaches 2m, select the plants with the same growing way to cut for the first time, the stubble height after cutting is 15cm, weigh fresh weight after cutting, which is the output of cutting for the first time, in the result embodiment 2 There is no significant difference in the yield (6522.1 kg / mu) of the first harvest (6522.1 kg / mu) shown in Table 6 when the...
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