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以日光温室越冬长茬番茄为试材,采用定点监测田间试验的方法,研究了番茄生育期干物质、养分吸收累积规律、单个果穗与干物质增量的关系和阶段养分吸收量及比例,以期为越冬长茬番茄合理施肥提供参考。结果表明:越冬长茬番茄养分吸收累积呈逐渐累积态势,整个生育期养分吸收量(N-P-K-Ca-Mg)为35、12、62、33、18g·株~-1,番茄坐果后植株地上部干物质以平均52%的比例分配到果实中;关键养分需肥期维持在定植后90~270d内;在第4、5穗果、第5、6穗果间,果实的干物质增量出现最低峰值,分别为2.8、0.8g·株~-1,此阶段的低温影响了番茄的生长。
Taking tomato overwintering in sunlight greenhouse as test material, field experiments were carried out to study the relationship between dry matter accumulation and nutrient accumulation, individual ear and dry matter increment, and nutrient uptake and proportion during the growth period For winter over stubble tomato fertilization provide a reasonable reference. The results showed that the accumulation of nutrient absorption of long-winged tomato was gradually accumulated, and the nutrient uptake (NPK-Ca-Mg) of the whole growing period was 35, 12, 62, 33 and 18 g · plant ~ The dry matter was distributed to the fruit with an average ratio of 52%. The key nutrients needed to be maintained within 90 ~ 270 days after planting. In the 4th, 5th and 5th ear, the dry matter increment of the fruit appeared The lowest peak, respectively, 2.8,0.8 g · strain ~ -1, the low temperature of this stage affected the growth of tomato.