黑龙江省青冈县种植甜菜习惯行距70厘米,株距35厘米左右,亩密度很少超过2800株,亩保苗一般不到2500株。这样的株行距束缚了甜菜块根单产的提高。为找出合理的种植密度,我们进行了如下试验。 1、试验地条件:土质为碳酸盐黑钙土,有机质含量3.93％,全氮量0.24％,全磷量0.11％pH值7.5。前茬为小麦。四月中旬用机引五铧犁平翻,耕深18厘米,亩撒施农家肥2 Qingguang County, Heilongjiang Province beet habit of planting 70 cm spacing, spacing of about 35 cm, rarely less than 2,800 acres of acres of acres, acres of seedlings generally less than 2500. Such a distance between lines tied beet root yield improvement. To find a reasonable planting density, we conducted the following test. 1, Experimental conditions: The soil is carbonate chernozem. The organic matter content is 3.93%, the total nitrogen content is 0.24%, the total phosphorus content is 0.11% and the pH value is 7.5. The former crop is wheat. In mid-April with machine quoted five plow plowing, deep farming 18 cm, mu sowing farmhouse fertilizer 2