The nitrogen release character of ZP coated fertilizer and its effect on summer maize were studied by field plot test.
通过田间试验研究了包膜肥料ZP氮素释放特点和在夏玉米上施用效果。
Test of fertilizer-applying in arid hillside jujube close planting garden shows that the effect of 3 times fertilizer applying is the best.
黄土丘陵区旱坡地枣树密植园施肥试验表明，施肥3次效果最好。
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