席草宽行窄株栽培法与产量结果分析

在湖南祁阳第四纪红壤母质发育的稻田进行席草宽窄行栽培试验的结果表明,“宽行窄株”适宜密度以30cm×15cm和25cm×15cm规格最佳,其生物产量分别为13.20t/hm2、12.76t/hm2,比常规栽培增产23.5%和19.3%,差异极显著。“宽行窄株”栽培法的基本原理:适当缩小株距,放宽行距;保证席草密植和基本苗数,增加单位面积有效茎针数;其增产的主要因素是发挥边行优势,协调个体与群体的发育,解决密植高产的矛盾。席草移栽期和收割期盆栽试验表明,席草移栽期以10月中旬最佳,移栽期推后则生物产量下降;席草适宜的收割期在7月上中旬。

The Study on Planting Method of Wide Row and Short Space between Plants of Mat Grass

An Experiment of wide row and short space between plants (WRSSBP) planting methods of Mat Grass (Juncus effuses L) was carried out on paddy field developed by Quarternary Red Soil. The result showed that the optimum planting density with (WRSSBP) was 30 cm×15 cm, following by 25 cm×15 cm. The biomass yields were 13.20 t/hm2 and 12.76 t/hm2, and 23.5% and 19.3% higher significantly than normal planting method, respectively. The principle of increasing yield of WRSSBP were that exert margin advantage and harmonize development of individual and colony by decreasing space between plants and increasing row distance. The results of pen experiments showed that mid October was the optimum transplanting time and early-mid July was the optimum harvesting time.