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2001~2004年,运用作物有效营养面积理论,对北方垄作区大豆垄幅的合理性问题进行了试验研究。研究表明大豆主产区黑龙江省中部、南部地区大豆有效营养面积为2 210~4 500 cm2,有效株行距为47.0~67.1 cm。其中中部地区的有效营养面积在2 210~4 025 cm2,即有效株行距为47.0~63.0 cm,南部地区的有效营养面积在3 838~4 500 cm2,即有效株行距为61.9~67.1 cm。南部地区品种有效营养面积较大,中部地区品种有效营养面积较小。据此阐明目前生产上广泛采用67~70 cm的垄作,已超过了大豆的有效株行距,造成了土壤资源等的浪费。中、北部垄作区采用55 cm左右的垄距种植大豆,将会更有利于大豆群体产量的提高。该理论为目前黑龙江省北部地区栽培面积逐渐增大的大豆窄行垄栽培提供了有力的理论根据。
From 2001 to 2004, using the theory of crop effective nutrient area, the rationality of soybean ridge in northern ridge area was studied. The results showed that the effective soybean nutrition area in central and southern Heilongjiang Province was 2210 ~ 4500 cm2 and the effective spacing was 47.0 ~ 67.1 cm. Among them, the effective nutrient area in the central region was 2 210 ~ 4 025 cm2, that is, the effective plantar spacing was 47.0 ~ 63.0 cm. The effective nutrient area in the southern region was 3838 ~ 4500 cm2, that is, the effective plantar spacing was 61.967.1 cm. The effective nutrient area of the southern region is larger, and the effective nutrient area of the central region is smaller. Based on this, it is clarified that the widespread use of ridge furrows of 67 ~ 70 cm in production has surpassed the effective row spacing of soybean and resulted in the waste of soil resources. In the middle and northern ridge areas, about 55 cm ridge spacing is used to grow soybean, which will be more conducive to the increase of soybean population. This theory provides a strong theoretical basis for the cultivation of narrow row ridge cultivation of soybeans in the north of Heilongjiang Province.