共查询到19条相似文献,搜索用时 78 毫秒
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沼肥,包括沼液和沼渣,是有机物质通过沼气池厌氧发酵的产物,是一种优质有机肥。沼液含纯氮、磷、钾分别为0.05%、0.03%、0.08%,沼渣含纯氮、磷、钾分别为1.2%、0.6%、1.0%。此外,还含有钙、铜、铁等多种微量元素及水解酶、氨基酸、腐殖质、B族维生素等多种生物活性物质。 相似文献
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详细介绍了核桃园综合管理的措施深翻土壤、适时中耕除草、施足基肥、适时追肥、冬春灌水、整形修剪、病虫害防治等. 相似文献
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简要介绍了灵石县核桃产业发展概况及核桃栽培中存在的问题,通过对原有核桃园区实施隔行隔株间伐技术与隔行落头去顶高枝嫁接技术,解决了核桃栽培中存在的营养生长与生殖生长不协调的问题,最后提出了水肥管理、树体整形以及树体修剪等日常管理技术。 相似文献
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介绍了祥云县米甸镇核桃低效林综合改造技术,探讨了实生树或劣种树高接换优、放任核桃树的改造以及加强核桃园管理,核桃病虫害防治等技术,以期为当地核桃园的高产高效提供参考,为核桃产业的发展提供技术支持. 相似文献
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三康氨基酸生物液肥对大豆产量的影响 总被引:4,自引:0,他引:4
1材料、方法 1.1材料:三康氨基酸液肥;多克福种衣剂;大豆 87- 9。 1. 2方法:于大豆播前 2天取液肥 80ml(100g)兑水 3. 5kg拌种 80kg,拌匀后堆闷 5~ 6h,灌袋待播, 5月 10日大田播种 100亩,相临两侧为同一品种的种衣剂包衣和白籽 (对照 )播种,播种量和播肥量同于大田,田间管理同于大田, 6月 20日进行化学除草,配方为亩用国产虎威 90g+精稳杀得乳油 70g兑水 25kg,喷药后观察, 6月 21日亩喷施液肥 40ml兑水 25kg,包衣和对照各喷水 14. 5kg,观察受害后恢复情况,最后观察成熟情况,测产。 2结果与分析 2. 1通过对出苗… 相似文献
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Uptake and internal cycling of nitrogen (N) in mature walnut trees was studied over a period of 6 years using (15)N-depleted fertilizer and full-canopied walnut (Juglans regia L. cv Hartley) trees. The magnitude of internal N cycling, i.e., the availability of N for new growth from internal N pools, was quantified using both the percent annual depletion (PAD) and the N balance budget approaches. There was good agreement between the two measures, and about 60% of annual N demand was derived from N redistribution from internal pools. The remaining 40% of annual tree N demand was met by an influx of N from the soil/fertilizer pool. Trees were excavated, processed and analyzed after 6 years to determine total tree N content and labeled N recovery. Trees recovered 29.4% of the labeled N applied and, based on previous evidence, we assumed that tree accumulation of labeled N occurred entirely in the first year. Labeled N in the fruits and leaves harvested in the first year represented 26% of the total labeled N accumulated, and the remaining 74% of the labeled N accumulated that year was stored and used to support development of annual organs in subsequent years. In the first year, the early maturing catkins did not accumulate labeled N, indicating their exclusive reliance on internal N. Using the atom% (14)N excess values of catkins and an exponential decline equation to determine turnover rate, the Mean Residence Time (MRT) of storage N in the tree was estimated to be 2.0 years. The size of the cycling pool of storage N in the tree was estimated to be about 50% of the total N content of perennial tree parts. Our data support the hypotheses that: (1) in any given year, mature walnut trees store the majority of soil and fertilizer N absorbed and within 2 years following uptake the N is remobilized and used for new growth, and (2) about half of the total N content of the perennial parts of mature walnut trees is present as nonstructural N and is available for recycling. 相似文献
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Characterization of endophytic bacteria with plant growth promotion and biological control potential isolated from walnut trees
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In this study, a total of 68 endophytic bacteria were isolated from different tissues of walnut trees. About 55% and 22% of the strains had the ability to produce indole acetic acid and gibberellic acid, respectively. The capability of isolates to solubilize phosphate, growth on N‐free medium, siderophore, protease and lipase production was varied. Based on phenotypic grouping and plant growth promotion properties, twelve isolates were selected and 16S rRNA gene‐based phylogenetic analysis revealed that strains showed 99%–100% similarity to Pseudomonas, Bacillus, Arthrobacter, Roseomonas and Streptomyces genera. Amongst the selected strains, PS12, KS54, JS66 and KS74 showed root and shoot growth enhancement of poplar cutting. NS70, KS54 and PL36 strains showed antagonistic activity against Pseudomonas syringae pv. syringae;RR47, KS74 and NR69 strains had inhibition effects against Brenneria nigrifluens; and JS66 and RR26 strains had antagonistic activity against both phytopathogens under in vitro conditions. This is the first reported study to elucidate the endophytic bacterial diversity associated with walnut trees with beneficial attributes. 相似文献