论文部分内容阅读
为实施好农业部“粮改饲”计划,在云南的洱源、弥渡、南华、陇川县开展相应试验示范,选择青贮玉米红单10号作为供试品种,播种量60 kg/hm~2,采用高密度种植,行距40 cm,株距20 cm,不间苗,密度在7 500~120 000株/hm~2。陇川县可全年播种,其他地区在春季收获后的5月份左右播种。乳熟后期收获,测定株高、叶片总数和枯叶片数,茎重、叶重、穗重、单株重量。结果:1产量及产值:陇川县全年可种植青贮玉米,3茬的总产量达到351.90 t/hm~2,平均每茬生育期95 d,产值105 570元/hm~2;而随着海拔上升和气温下降生育期延长,位于温带的洱源县,只能种植1茬青贮玉米,产量达到117.90 t/hm~2,生育期平均118 d,产值47 160元/hm~2;而位于暖温带的弥渡县和南华县,各方面的指数相近,弥渡县产量达到121.80 t/hm~2,生育期平均111 d,产值42 630元/hm~2;南华县产量达到120.74 t/hm~2,生育期平均96 d,产值42 259元/hm~2。2指数测定:平均株高304.25±5.19 cm、叶片总数14.25±0.50片、枯叶数2.25±0.50片、茎重682.50±5.80 g、叶重224.00±2.94 g、穗重323.00±52.88 g和单株重量1 229.50±48.26 g。
In order to implement the Ministry of Agriculture’s “Replacing Food” program, pilot projects were carried out in Eryuan, Midu, Nanhua and Longchuan counties in Yunnan Province. Silage corn Hongdan 10 was chosen as the test variety with a seeding rate of 60 kg / hm ~ 2, with high density planting, spacing 40 cm, plant spacing 20 cm, not seedlings, the density of 7 500 ~ 120 000 plants / hm 2. Longchuan County can be planted throughout the year, other areas in the spring after harvest around May sown. After harvesting, the plant height, the total number of leaves and the number of dry leaves, stem weight, leaf weight, ear weight and weight per plant were measured. Results: 1 Output and output value: The silage corn can be planted in Longchuan County for the whole year. The total output of the three crops reached 351.90 t / hm ~ 2 and the average growth period per crop was 95 days with the output value of 105 570 yuan / hm ~ 2. The elevation and the temperature drop prolong the growth period. In the temperate Eryuan County, only one-silage corn can be planted, with the yield reaching 117.90 t / hm ~ 2, the average growth period of 118 d, and the output value of 47 160 yuan / hm ~ 2. In the warm temperate Midu and Nanhua counties, the indices in all aspects are similar. The output of Midu County reaches 121.80 t / hm 2, the average growth period of 111 d, the output value of 42 630 yuan / hm 2, and the output of Nanhua County reaches 120.74 t / hm ~ 2, the average growth period of 96 d, the output value of 42259 yuan / hm ~ 2.2 index determination: the average height of 304.25 ± 5.19 cm, leaves a total of 14.25 ± 0.50 pieces, dead leaves 2.25 ± 0.50 pieces, stem weight 682.50 ± 5.80 g, leaf weight 224.00 ± 2.94 g, ear weight 323.00 ± 52.88 g, and plant weight 1 229.50 ± 48.26 g.