摘要
旱地春小麦在现有施肥等级下不同的施肥数量都能使产量和生物量增加,其结果是:低肥和高肥处理比对照产量分别提高了32.8％、25.1％和26.7％、18.6％。水分利用效率比对照分别提高 0.084和 0.171kg/mm与 0.071和0.134kg/mm。高肥处理与低肥相比,产量和生物量反而降低了6.1％和8.1％,水分利用率降低了 0.011和 0.037kg/mm。说明年平均降水量在 400mm左右的干旱地区不宜施用过多的肥料,每亩用5kg硝酸铵和10kg过磷酸钙就可以满足小麦的需要。
Yield and biomass of spring wheat were increased with different quantities of ferti-lizers in rainfed lands. The results showed that the yield of spring wheat treated by lowand high fertilization was increased by 32.8%, 25.1 % and 26.7%, 18.6% respectively inconparison with the controls, and that water use efficiency was increased by 0.084,0. 171kg / mm and 0.071,0. 134kg / mm respectively as agsinst the controls, In conparisonof high fertilization with low fertilization, the yield and biomass of spring wheat de-creased 6.1% and 8.1 % respectively, while water use efficiency decreased 0.011,0.037kg/ mm, thus, indicating that no more fertilizer is needed in the arid areas withrainfall of 400 mm. Therefore, 5kg of ammonium nitrate and 10kg of calciumperphosphate per mu were enough for the requirements by wheat.
出处
《干旱地区农业研究》
CSCD
北大核心
1990年第4期98-104,共7页
Agricultural Research in the Arid Areas
关键词
施肥
小麦
水分利用率
旱地
产量
drought
water use efficiency
spring wheat
fertilizer
