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配方施肥是现阶段比较科学的施肥技术,能提高化肥的肥效,降低农业成本,克服生产中偏施氮肥和滥施化肥的倾向,增产增收效果显著,值得推广。我站通过试验、示范,找出了适应我区的最佳氮磷配比,并取得了可喜的经济效益,现介绍如下,以期望1990年在我区普及配方施肥技术。一、我区冬小麦氮磷配施的概况和科学依据根据1975年土壤肥力普查,我区耕层土壤平均含有机质0.83％、全氮0.085％、全磷0.16％,碱解氮每亩1.19公斤、速效磷每亩1.045公斤、速效钾每亩1.585公斤。表现出氮缺、磷少、钾较高,有机质含量低的肥力状况。为了解决我区不足的土壤养分,找出适宜我区的氮磷配比,地区农技站组织各县农技站和地区点,按统一的化肥配方试验方案,在全区范围内进行了冬小麦氮磷不同比例和不同量的多点试验,现将两年的试验结果总结如下:
Formulation fertilization is a more scientific technology of fertilization at this stage, which can improve fertilizer efficiency, reduce agricultural costs, overcome the propensity of partial application of nitrogen fertilizer and excessive chemical fertilizers in production, and increase production and income. It is worth promoting. Through tests and demonstrations, I have identified the optimal ratio of nitrogen and phosphorus to our region and made gratifying economic benefits. Now I am going to introduce the following in order to popularize the formula fertilization technology in our region in 1990. I. General Situation and Scientific Basis of Nitrogen and Phosphorus Application in Winter Wheat in Our District According to the soil fertility survey in 1975, the average contents of organic matter in cultivated soils in our district were 0.83%, 0.085% of total nitrogen, 0.16% of total phosphorus and 1.19 kg of alkali-hydrolyzed nitrogen, Available phosphorus 1.045 kg per acre, available potassium 1.585 kg per acre. Nitrogen deficiency, phosphorus less, higher potassium, low organic matter content of fertility status. In order to solve the lack of soil nutrients in our area, identify suitable for our region’s nitrogen and phosphorus ratio, the regional agricultural stations organize county agricultural stations and regional points, according to a unified fertilizer formula test program, conducted a winter wheat Different proportions of nitrogen and phosphorus and different amount of multi-point test, now two years of test results are summarized as follows: