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微量元素是作物生长发育不可缺少的营养元素。1985～1987年,就锌、硼、锰对西瓜的生长发育,产量及质量影响进行试验研究,现将结果报道于后。试验安排在荣阳、郸城、遂平等县,土壤为褐土和砂姜黑土。供试土壤有机质平均含量为0.8821％,全氮0.0543％,水解氮58.083ppm,速效磷(P_2O_5)21.81ppm,速效钾(K_2O)130oppm。试验设四个处理,分别为①喷洒等量清水,②0.15％硫酸锌,③0.2％硼砂,④0.15％硫酸锰。小区面积0.05～0.1亩,随机排列,3～4次重复。供试硫酸锌为[ZnSO_4·7H_2O],
Trace elements are essential nutrients for crop growth and development. From 1985 to 1987, on the zinc, boron, manganese watermelon growth and development, yield and quality of the experimental study, the results are reported later. Experimental arrangements in Rongyang, Dancheng, Suiping County, the soil is cinnamon and lime ginger black soil. The content of soil organic matter was 0.8821%, 0.0543% of total nitrogen, 58.083ppm of hydrolyzed nitrogen, 21.81ppm of P 2 O 5 and 130oppm of available potassium. Test set up four treatments, respectively ① spraying the same amount of water, ② 0.15% zinc sulfate, ③ 0.2% borax, ④ 0.15% manganese sulfate. Community area of 0.05 to 0.1 acres, randomly arranged, 3 to 4 times repeated. Test for zinc sulfate [ZnSO 4 · 7H 2 O],