A 8 years long term experiment was conducted on the high yield area of plain at the foot of Yanshan mountain.
通过连续8年长期定位试验，研究了不同施肥方式对燕山山麓平原高产粮区褐土土壤肥力和作物产量的影响。
Zizyphus Jujuba has large distributions area and high yield, which shows that Gansu province has great production and potential capability, and that it can be managed as heading product.
枣树在我省资源分布面积大，产量较高，适宜区域分布范围广。表明枣在我省已具备较强的生产能力和长远的发展潜力。
Maize, as a high-efficient crop of high yield for the grain and feed, the cultivated area in the future should be further expanded.
玉米作为粮食和饲料兼用的高产高效作物，今后的种植面积应进一步扩大。
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