Results 21 to 30 of about 352 (145)
Effect of Radio Frequency Combined with Hot Air Heating on Degradation of Aflatoxin B1 and Corn Quality [PDF]
This study analyzed the effects of radio frequency-hot air treatment under different conditions of initial corn moisture content (19.05%, 22.25%, and 25.55%), radio frequency heating temperature (55, 65, 75, and 85 ℃) and heating time (10, 15, 20, and 25
ZHANG Jinfang, LI Mei, CHEN Wei
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Shuitu Baochi Xuebao, 2011 在田间条件下研究了施氮量对春玉米产量、氮肥利用率和土壤硝态氮时空分布的影响,旨在为冀西北春玉米氮肥优化管理提供理论依据。研究结果表明,春玉米产量随施氮量的增加而提高,当施氮量高于225 kg/hm2时,春玉米产量和氮肥利用率显著降低。从春玉米播种前到收获后,不施氮处理0-90 cm各土层硝态氮含量不断降低,施氮处理0-30 cm和30-60 cm土层硝态氮含量呈先上升后迅速下降并保持稳定的趋势,而60-90 cm土层硝态氮在春玉米生长后期有增加的趋势;春玉米收获后随着土层深度的增加,硝态氮呈波浪式下降 ...
王激清, 刘社平, 韩宝文
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Shuitu Baochi Xuebao, 2017 为充分利用自然资源，减轻土壤盐渍化，提高农田生产力，在内蒙古河套灌区以春小麦、玉米和向日葵单作为对照，监测春小麦—向日葵复种对土壤水分、盐分和农田生产力的影响。结果表明：春小麦收获前，春小麦—向日葵复种和春小麦单作0—100 cm土层土壤水分低于玉米单作和向日葵单作；春小麦收获后春小麦—向日葵复种、玉米单作和向日葵单作耕层土壤水分高于春小麦单作，20—80 cm土层土壤水分则低于春小麦单作。春小麦收获前不同种植模式的土壤盐分变化剧烈，春小麦收获后则变化平缓。不同种植模式主要影响0—40 cm土层土壤盐分，
白岗栓, 邹超煜
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Shuitu Baochi Xuebao, 2022 在大田试验的基础上探明灌溉水盐分以及灌水量对土壤水盐分布的影响规律以及对春玉米生长的影响。以河套灌区春玉米为研究对象，设置2种灌溉水含盐量（1.1，5.0 g/L）与3种灌水量（210，255，300 mm）进行大田试验。结果表明，至成熟期，5.0 g/L微咸水灌溉处理0—100 cm土层土壤平均含水量及电导率相比1.1 g/L地下水灌溉处理显著增加；地下水灌溉处理中，随着灌水量的增加，生育期内土壤平均含水量下降趋势减小，土壤盐分淋洗作用更加明显；微咸水灌溉处理中，剖面土壤在灌水量少时出现盐分表聚现象 ...
张美桃 +5 more
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Effects of Chemical Fertilizer Reduction Combined with Straw and Organic Fertilizer Application on Soil Acidification Mitigation and Erosion Control [PDF]
[Objective] To demonstrate that appropriate application of straw and organic fertilizer can effectively improve soil quality, have a positive effect on soil acidification mitigation and erosion control.
CAO Yunfei +9 more
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Shuitu Baochi Xuebao, 2019 在山西省连作春玉米区连续4年设置大田定位试验，设置不施氮肥（CK）、一次性基施尿素（CU1）、追施尿素（CU2）、树脂包膜尿素（PCU）、硫包衣尿素（SCU）、多酶金缓释尿素（MEU）6个施肥处理，研究施用缓控释氮肥对春玉米产量、氮肥去向及氮素平衡的影响，为春玉米氮素养分的科学管理技术提供参考。结果表明：（1）缓控释氮肥处理能够明显提高春玉米产量，促进氮素吸收。与CU1处理相比，SCU、MEU、PCU和CU2处理可分别提高春玉米产量17.51%，9.88%，9.62%，9.48 ...
解文艳 +4 more
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Effects of nitrogen application time on fruit setting rate and lignin accumulation during sepal development of Kuerlexiangli pear [PDF]
[Objective] Sepal shedding of Kuerlexiangli pear (Pyrus brestschneideri Rehd.) is a key factor in determining fruit quality and economic value. Nitrogen is an essential element for the growth of fruit trees, and has a profound influence on the growth and
BAO Jianping +4 more
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Combined Effects of Humic Acid-Modified Magnetic Biochar and AMF on the Properties of Saline-Alkali Soil and Photosynthetic Parameters of Muskmelon [PDF]
[Objective] To improve humic acid-modified magnetic biochar (HA-MBC) and explore the combined effects of modified biochar and arbuscular mycorrhizal fungi (AMF) on the properties of saline-alkali soils and the growth of muskmelon.
CHEN Xinyan +12 more
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The Impact of Mixed Application of Modified Straw Biochar and Organic Fertilizer on Soil Water Retention and Fertility Maintenance in the Loess Hilly Dry Area [PDF]
[Objective] This study aimed to investigate the effects of different modified corn straw biochars on the water retention and fertilizer conservation capacity of arid loess soil and their effects on crop growth.
CHANG Fangling +5 more
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Shuitu Baochi Xuebao, 2005 通过田间试验研究不同施氮量与灌水量对春玉米和冬小麦田土壤中硝态氮分布与累积的影响,结果表明,春玉米收获后0~2 m土壤中累积硝态氮185.7~748.0 kg/hm2,其中1 m以上占57.9%~70.1%。由于施用氮肥而增加的硝态氮占施N量的1.8%(N 112.5 kg/hm2),50.7%(N 225 kg/hm2),56.7%(N 337.5 kg/hm2)和77.0%(N450 kg/hm2)。不施N和施N 112.5 kg/hm2时春玉米田土壤剖面没有明显累积峰;施N等于或高于225 kg ...
高亚军 李生秀 李世清 田霄鸿 王朝辉 郑险峰 杜建军
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