不同栽培密度对黄岩小芥菜生产的影响

目的]建立合理的群体密度,以提高黄岩小芥菜个体的商品性和群体的综合生产力。方法]以"黄岩小芥菜-1"为材料,研究秋季在大棚和露地2种栽培模式下,不同栽培密度对其主要农艺性状及产量的影响。结果]秋季在大棚栽培条件下,用种量为1.0 g/m2时,产量最大,达40 456.5 kg/hm2;经对用种量模拟优化,当用种量为1.2 g/m2时,达理论最大产量。而露地栽培用种量为1.5 g/m2时产量最大,为37 609.5 kg/hm2;经模拟优化,当用种量为1.8 g/m2时候,达理论最大产量。结论]大棚栽培的植株性状整体优于露地栽培;影响单株产量和群体数量的因素是单株叶面积。

Effects of Different Planting Density on the Production of Huangyan Brassica juncea L.

Objective] The research aimed to set up reasonable population density and enhance the individual commercial quality and population comprehensive productivity.Method] With Huangyan Brassica juncea L No 1 as materials,the effects of different planting density on its main agronomic traits and yield were studied in autumn in 2 kinds of modes of greenhouse and open-field planting.Result] Under the greenhouse planting in autumn,when the sowing quantity was 1.2 g/m2,the yield was maximum(40 456.5 kg/hm2).Through simulating and optimizing the sowing quantity,the theoretical maximum yield could be reached when the sowing quantity was 1.2 g/m2.Under the open-field planting,the yield was maximum at the sowing quantity of 1.5 g/m2,being 37 609.5 kg/hm2.Though stimulation and optimization,the theoretical maximum yield could be reached when the sowing quantity was 1.8 g/m2.Conclusion] The traits of plant cultivated in greenhouse were better than that in open planting.The factor that affected the yield per plant and population quantity was leaf area per plant.