Grass Seed Production as Influenced by Cultivation, Gapping, and Postharvest Residue Management1
Grass Seed Production as Influenced by Cultivation, Gapping, and Postharvest Residue Management1
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耕种、间隙和采后残留物管理对草籽产量的影响1
DOI：
10.2134/agronj1972.00021962006400020006x
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发表时间：
1972
期刊：
影响因子：
--
通讯作者：
C. L. Canode
中科院分区：
文献类型：
--
作者：
C. L. Canode
研究了栽培、初始林分间隙和采后秸秆就地焚烧对‘Pennlate’（Dactylis glomerata L.）和‘Newport’（Poa pratensis L.）肯塔基蓝草种子产量的影响。这两种草生长在分开但相邻的街区。试验设计为以栽培处理为主的分块小区。在本试验条件下，每年4月进行一次旋锄栽培（最小栽培）是最佳方法。额外的扫铲栽培（常规栽培）降低了肯塔基蓝草的种子产量，对果园草的种子产量没有影响。4月份的常规栽培比9月份的类似栽培减少了更多的肯塔基蓝草种子产量。常规栽培留下30厘米行宽比留下46厘米行宽更能降低种子产量。苗期封顶降低了果园草和肯塔基蓝草第一季的种子产量，但对后续作物影响不大。机械清除采后残留物与焚烧处理在果园草种子生产中同样有效。与机械清除采后残留物相比，焚烧在第二和第三季的肯塔基蓝草种子产量较低，但在第四和第五季的产量较高。
A study was conducted to determine the influence of cultivation, gapping of the initial stand, and in situ burning of the postharvest residue on the seed yields of ‘Pennlate’ orchardgrass (Dactylis glomerata L.) and ‘Newport’ Kentucky bluegrass (Poa pratensis L.). The two grasses were grown in separate but adjacent blocks. The experimental design for each species was a split-plot with cultivation treatments as the main plots. One cultivation with a rotary hoe (minimum cultivation) in April of each year was the best method under conditions of these experiments. Additional cultivation with sweep-shovels (conventional cultivation) reduced the seed yields of Kentucky bluegrass and did not influence the seed yields of orchardgrass. Kentucky bluegrass seed yields were reduced more by conventional cultivation in April than by similar cultivation in September. Conventional cultivation leaving a 30-cm row width reduced seed yields more than leaving a 46-cm row width. Capping of the rows in the seedling year reduced the seed yields of both orchardgrass and Kentucky bluegrass in the first crop but had little effect on subsequent crops. Mechanical removal of postharvest residue was as effective as burning in orchardgrass seed production. Burning compared with mechanical removal of the postharvest residue produced lower seed yields of Kentucky bluegrass in the second and third crops, but higher yields in the fourth and fifth crops.