稻田免耕稻草覆盖马铃薯的产量及商品性研究

于2004—2005年开展了稻田免耕稻草覆盖马铃薯不同密度和不同施肥田间试验,结果表明:在不同密度和肥料运筹处理下,马铃薯产量存在显著差异,以F1D4产量最高。在不同密度处理下马铃薯产量随马铃薯种植密度的提高而增产,马铃薯种植密度降低有利于形成大薯,平均单个薯重增加,提高商品性,提出稻田免耕稻草覆盖马铃薯最低密度不宜少于60000穴/hm2,高肥下可适当降低播种密度,低肥下应适当增加播种密度。

Study on Yield and Commodity Characteristic of Potato with Straw Covering and No-tillage Cultivation in Paddy Field under Different Managements

The experiments of potato cultivated with straw covering and no-tillage under different managements of density and fertilizer dosage were carried out in 2004-2005. The results showed that the fresh potato yield of different managements was different significantly. F1D4 with 375 kg compound fertilizer and 90000 plants per ha was the highest yield in these treatments. The potato yield was increased when planting density of potato was increased, the amount of big potato was increased when the potato planting density was decreased, the weight of average single potato was increased, the commodity characteristic of potato was better. We proposed that most low density of the potato with straw covering and no-tillage cultivation was more than 60,000 plants /hm2, the planting density was lower in fertility soil and was higher in poor soil.