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研究在本农艺学院开展,对每日平均气温、降水和光照均作记录。处理设六种不同株行距(0 .70×0 .12 ,0 .50×0 .12 ,0 .70×0 .06 ,0 .30×0 .12 ,0 .50×0 .06和0 .30×0 .06 m) ,对应密度是12 ,18 ,24 ,28 ,33和55株/ m2。测定0~100cm土壤样品水分含量,用于计算作物水分蒸发蒸腾量(ET)、作物光截获量(α)、土壤蒸发量(Es)、作物水分利用率( WUE)和蒸腾率(Te)。最低密度(0 .70×0 .12 m)单株生长最好,最高密度处理则导致最低的单株干物质产量,其余4个处理单株干物质产量居于二者之间。两个品种的不同间距处理同样对单株荚果饱果数、荚果和种子产量有显著影响,高密度下使其均降低,但单位面积荚果和种子产量提高,但Florman的产量要好于Colorado。种植处理显著影响作物水分蒸发蒸腾量。行距0 .30 m和0 .50 m下,两个品种都达到46和60 DAS;行距0 .70 m下,Colorado是66DAS而Florman是87DAS。两个品种的蒸腾率都受到行距的影响,两个品种的WUE都受到间距影响,0 .70 m行距下WUE最低,Colorado在0 .50 m和0 .30 m行距下,Florman在0 .30 m下WUE最高。行距对Te的影响因品种而异,Colorado在不同行距下无显著差异,而Florman的Te则随行距减少而增加。不同间距和品种对光合效率都没有很大影响(Colorado是3 .1×10-2Kcal/ha ,Florman是3 .0×10-2Kcal/ha)。
The study was conducted at this agronomy academy and recorded daily average temperature, precipitation and light. Six different row spacing (0 .70 × 0 .12, 0 .50 × 0 .12, 0 .70 × 0 .06, 0 .30 × 0 .12, 0 .50 × 0 .06 and 0 were set. 30 × 0 .06 m) with corresponding densities of 12, 18, 24, 28, 33 and 55 plants / m2. The moisture content of soil samples from 0 to 100 cm was measured and used to calculate crop evapotranspiration (ET), crop light interception (α), soil evapotranspiration (Es), crop water use efficiency (WUE) and transpiration rate (Te). The lowest density (0.70 × 0.12 m) was the best for growth of the plant, the highest density treatment resulted in the lowest yield of dry matter per plant, and the dry matter yield of the other 4 plants was in between. The different spacing treatments of two cultivars also had significant effects on the number of full pods per plant, pod and seed yield, but decreased at high density, but the yield of pod and seed per unit area increased, but the yield of Florman was better than that of Colorado. Planting treatment significantly affected crop evapotranspiration. At both 0.30 m and 0.50 m spacing, both cultivars achieved 46 and 60 DAS; at 0.70 m row spacing, Colorado was 66DAS and Florman was 87DAS. The transpiration rate of both cultivars was affected by the row spacing. The WUEs of the two cultivars were affected by the spacing, with the lowest WUE at 0.70 m row spacing, at 0.50 m and 0.30 m row spacing for Colorado, and 0.30 at Florman at 0.30 WUE highest under m. The effect of row spacing on Te varies by breed, Colorado has no significant difference at different row spacing, while Florman’s Te increases with decreasing row spacing. No significant effect on photosynthetic efficiency was observed for different spacing and variety (Colorado was 3.1 × 10-2 kcal / ha and Florman was 3.0 × 10-2 kcal / ha).