摘要
用玻璃管观测法研究了水浇地和旱地春小麦的根系生长动态，结果表明，表层（０～２０ｃｍ）水浇地小麦根数多于旱地；中层（２０～５０ｃｍ）旱地小麦根数多于水浇地小麦；深层（５０ｃｍ以下），在小麦出穗以后，旱地小麦根数超过水浇地小麦根数。春小麦根数随出苗后天数呈三次多项式型动态曲线，旱地小麦根数峰值比水浇地小麦滞后约７天，但其峰值期持续时间较长。
Root growth dynamic of spring wheat in irrigated and dry ( unirrigated) land was studied usingminirhizon techenique.The results showed that the root numbers of wheat in irrigated land are morethan that of wheat in dry land in horizon～20 cm,but in 20～50 cm,it is contract,below 50 cm af-ter earing of wheat,the rootnumbers of wheat in dry land are more thanthat of wheat in irrigatedland.The total root numbers dynamic curve of wheat was thecubic regression model with the days af-ter emerging seedling.The root number peak of wheat in dry land is later 7 days and the peak period islonger than that of wheat in irigated land.
出处
《西北农业学报》
CSCD
1995年第4期21-24,共4页
Acta Agriculturae Boreali-occidentalis Sinica
