不同灌水量对甜菜生长及糖分积累影响的研究

灌水是新疆干旱区甜菜生产的关键因素，土壤水分状况对甜菜生长和糖分积累有显著影响。研究表明：良好的供水有利于甜菜生产，增加块根产量，但含糖率会明显下降。叶丛快速生长 甜菜生长的需水临界期，这一时期缺水将严重影响产量。

Effect of Irrigation Water Amount to the Sugarbeet Growth and Sugar Accumulation

The irrigation is a important factor to sugarbeet growth in dry region of Xinjiang . The soil moisture affects the growth and sugar accumulation of beet. The study showed that adequate water promotes growth and increases yield, but the rate of sugar decreases greatly. Water is crucial for beet yield during the phyllome speed - growth stage. To control water supply, especially to control evening water supply can improve sugar ratio. Under this experiment condition, the rational scheme is that total irrigated capacity is 300 ~ 350(m3/667m2) devided 6 ~ 7 times in whole peried of beet growth .The enough water should be applied during phyllome speed - growth stage, and then the water supply was decreased gradually, which each irrigated capacity was controlled in range of 30 ~ 45(m3/667m2).