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美国南部海岸平原地区花生缺锰是一个普遍问题,然而有关花生植株所需锰浓度的资料尚嫌不足。本试验目的是研究土壤pH值和施锰的交互作用对蔓生型花生叶片各元素含量和产量的影响,确定蔓生型花生几个生长期叶片锰的临界值(相当于90%的最高产量)和含锰的足量水平。材料与方法田间供试品种为佛州蔓生花生,pH—Mn对花生效应的研究始于1977年,试验随机区组裂区设计,重复5次,全部小区pH值分低、中、高三个等级,即5.5,6.0和6.5,小区宽0.92米,长6.1米,种植6行。供试土壤含磷量高(78公斤/公顷),钾中等(88公斤/公顷)。锰肥施用量分为0、10、20和40公斤/公顷,其它元素的施用量为磷44,钾84,镁38,硼1.12,铜2.24,锌3.40公斤/公顷,所用盐类分别为CaHPO_4,KC1,K_2SO_4,MgSO_4
Manganese deficiency in peanut is a common problem in the southern coast plains of the United States, but information on the manganese concentration required for peanut plants is not enough. The purpose of this experiment is to study the effect of soil pH and manganese interaction on the content and yield of all kinds of peanut leaves. The critical value of manganese (equivalent to 90% of the maximum yield) Manganese-rich levels. MATERIALS AND METHODS Field experiment was conducted to study the effects of pH-Mn on peanut in peanut field. The peanut effect was studied in 1977. The experimental randomized block was designed and repeated 5 times. The pH values of all the plots were low, medium and high , That is, 5.5, 6.0 and 6.5, cell width of 0.92 meters, 6.1 meters long, planted 6 lines. Soil samples for high phosphorus (78 kg / ha), potassium medium (88 kg / ha). Manganese fertilizers were divided into 0, 10, 20 and 40 kg / ha. Other elements were applied as phosphorus 44, potassium 84, magnesium 38, boron 1.12, copper 2.24 and zinc 3.40 kg / ha. The salts used were CaHPO 4 , KC1, K_2SO_4, MgSO_4