论文部分内容阅读
我省豫东平原沙地果园,土质瘠薄,肥力很低。据多点调查,土壤耕层有机质为0.38～0.84%,全氮含量仅0.03～0.05%,绝大多数果园因施肥不足,造成果树普遍低产、质差、早衰、抗病虫力差。为了广开肥源,增施肥料,改变上述状况,于1973～1978年,在河南省民权农林场河东队苹果园,进行了不同方式掩青试验,对其肥效和后效进行了田间调查和室内分析,现将试验结果简述如下:
Yudong plains in our province orchard sand, soil infertility, fertility is very low. According to the multi-point investigation, the soil organic matter in topsoil is 0.38-0.84% and the total nitrogen content is only 0.03-0.05%. Most of the orchards suffer from insufficient fertilization, resulting in low yield, poor quality, premature aging and poor pest resistance. In order to widen the source of fertilizers, increase fertilizers, to change the above situation, in 1973 ~ 1978, civil rights farms in Henan Province Hedong team apple orchard, conducted a different way to cover the green test, its fertilizer efficiency and after-effects of a field survey and Indoor analysis, the test results are summarized as follows: