大垄栽培条件下的土壤环境与马铃薯产量

试验进行了大垄与小垄两种栽培模式下的一些土壤环境因子及马铃薯产量的差异研究,结果表明:大垄栽培改善了结薯区及根区的土壤生态环境,使该区的土壤容重和出苗后10￣25cm耕层土壤温度显著降低;使20￣30cm土壤含水量显著地增加;促进了养分释放;大垄栽培相对于小垄使马铃薯总产量和商品薯产量明显增加,且均达到极显著水平。大垄栽培使总产增加24.31%,商品薯产量增加得更大,达到61.74%。大垄栽培是可以在黑龙江省大范围推广的栽培方式。

Effects of Big Ridge on Soil Environments and Potato Yield

Differences in soil environments and tuber yield under two cultivation systems, big ridge and small ridge, were investigated. When potatoes were cultivated under big ridge system, the soil ecological environments in the zone of tuber formation were improved. The bulk density of soil and temperature of soil at the depth of 10-25 cm after emergence were decreased, while soil moisture content at 20-30 cm increased. Big ridge was in favor of release of nutrients. Total and marketable tuber yields were highly significantly higher under big ridge than small ridge condition. Compared with small ridge, big ridge increased total yield and marketable yield by 24.31% and 61.74%, respectively. These data suggest that big ridge cultivation system could be adopted for potato production in Heilongjiang province.