马铃薯滴灌高产栽培及效益评价研究

Study on High Yield Cultivation and Benefit Evaluation of Potato under Drip Irrigation

为探讨青海省干旱区马铃薯发展的新途径,特开展了马铃薯高产栽培及经济效益评价研究。结果表明:(1)滴灌条件下马铃薯的最佳灌水量为405.4m3/667m2,最高产量为3 100kg/667m2。(2)马铃薯整个生育期吸收氮最多,其次为钾,磷最少。最佳追肥比例为苗期5%,团棵期21%,开花期54%。(3)示范区较农户地产量提高了50%;平均净收益提高了246.64%;平均用水量降低了49.33%。该研究可以为青海省干旱区马铃薯的高产栽培、水分高效利用和农民增收提供依据。

To explore a new way of potato development,a field experiment was conducted to develop potato high yield cultivation and estimation of economic Benefit. The results showed that： （1）The best irrigation quantity is 405.4m3/667m^2,potato yield is 3 100kg/667m^2 under the condition of drip irrigation. （2） Nitrogen uptake ismost,followed by potassium;phosphorus isminimum during whole growth period. Best fertilizer proportion for seedling stage 5%,spherical plant stage 21%,flowering stage 54%.（3）Demonstration area potato yield increased by 50% compare with farmer land; net income increased by 246.64% under 667m^2; water consumption was reduced by 49.33% under 667m^2. It can provide a scientific basis for potato high yield cultivation,high water use efficiency and increasing farmers＂ income in arid area of Qinghai province.