Results 1 to 10 of about 263 (139)
Effects of Continuous Straw Returning Combined with Reduced Fertilizer Application on Rice Yield and Loss of Nitrogen and Phosphorus [PDF]
, 2022 [Objective] The effects of straw returning combined with reduced chemical fertilizer application on rice yield and nitrogen and phosphorus losses with runoff were studied in order to provide a scientific basis for the recycling and reuse of local ...
Liang Fan +8 more
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Analysis of Rice Quality Characteristics of Indica Rice Varieties of China in Recent 10 Years [PDF]
, 2023 Based on the analysis of rice quality characteristics of indica rice varieties from regional trials in recent 10 years, we hope to provide references for quality improvement of indica rice varieties in the next stage.
CHEN Ming-xue +5 more
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Do diverse landscapes provide for effective natural pest control in subtropical rice?
Journal of Applied Ecology, Volume 57, Issue 1, Page 170-180, January 2020., 2020 Our findings question the cost‐effectiveness of current chemical‐based pest management in farming, and highlight opportunities for more ecologically based pest management strategies based on the widespread activity of natural enemies. Pest damage and biocontrol, however, are largely independent from the landscape context, which might be due to the ...
Yi Zou +8 more
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The development of a vision-based phenotypic analysis algorithm for measuring spikelet-related traits in rice [PDF]
, 2022 Rice (Oryza sativa) and its production is of great importance to China’s food security. To assess its yield potential and grain quality, spikelet-related traits such as the number of spikelets per spike, seed coat color, spikelet length, width and length,
Jiawei, Chen +4 more
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Shuitu Baochi Xuebao, 2023 基于2016年的田间定位试验,在冬闲(F)和冬种绿肥(G)2种模式下,探究不同施氮量(N0:不施氮;N50:减氮50%;N100:常规氮;N150:增施氮50%)对双季稻产量、养分吸收特征及氮素利用率的影响,以期为南方稻区绿肥利用和氮肥施用提供科学理论依据。结果表明,与冬闲模式相比,冬种绿肥模式提高4种不同氮水平下的早晚稻产量,其中早、晚稻稻谷产量平均增产8.0%,5.7%。2种模式下的早稻产量随施氮量增加均呈现出先增加后降低的趋势,而晚稻则呈现上升的趋势。冬种绿肥模式同样提高植株地上部氮(N)、磷(P)
庾振宇 +8 more
doaj
, 2018 科学与工程计算利用高级计算能力理解和解决复杂的科学和工程问题，是计算机实现在高科技领域应用的纽带和工具。进入21世纪以来，千万亿次、百亿亿次科学与工程计算将显著提升各国在国家安全、航空航天、生命科学、材料科学、气候与生态环境等领域的科技创新能力，产生重大科学理论和应用突破。该文以Clarivate Analytics公司的Web of Science TM核心合集数据库中2007－2016年间的科学与工程计算研究论文为数据源，利用Thomson Data ...
刘小平, 吕凤先
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Shuitu Baochi Xuebao, 2023 为研究不同用量钙镁水滑石对镉污染稻田土壤特性、双季稻产量与稻米镉积累的影响,探讨镉污染双季稻田钙镁水滑石的最佳施用方式。2021年,以早稻品种"湘早籼45号"和"陆两优996",晚稻品种"创两优669"和"玉针香"为试验材料,在湖南省郴州市良田镇重度镉污染稻田(全镉含量1.16 mg/kg)开展大田试验,比较研究钙镁水滑石(0,CK;早稻基施3 000 kg/hm2,T1;早稻基施1 500 kg/hm2,T2;早稻基施750 kg/hm2+晚稻基施750 kg/hm2,T3)4个处理下土壤特性 ...
田琴琴 +8 more
doaj
Shuitu Baochi Xuebao, 2022 为解决水稻生产过度依赖化肥及其环境和高效利用问题,探讨贵州黄壤稻田科学施用生物炭。在贵州省思南县典型黄壤稻田开展氮肥不减量(T0)和氮肥减10%施2.5 t/hm2(T1),氮肥减20%施5.0 t/hm2(T2),氮肥减30%施7.5 t/hm2(T3),氮肥减40%施10.0 t/hm2生物炭(T4)和不施肥对照(CK)共6个处理3次重复田间小区随机区组试验,研究了氮肥减量施生物炭对水稻产量、产量构成和氮磷钾养分吸收利用的影响。结果表明,氮肥减量施生物炭显著影响贵州黄壤稻田水稻产量、产量构成 ...
段建军 +7 more
doaj
Shuitu Baochi Xuebao, 2020 针对水稻生产中存在秸秆处理不当以及化肥用量增多等问题，以山东省济宁市稻麦轮作体系下水稻"圣稻18号"为研究对象，通过田间试验设置3个处理：常规施肥，小麦秸秆不还田（CK）；常规施肥+小麦秸秆全量还田（T1）；常规施肥量的85%+小麦秸秆全量还田（T2），深入探究秸秆还田与化肥减施对不同生育期水稻生长、光合参数和产量的影响，为制定合理的水稻种植措施提供理论依据。结果表明，稻麦轮作体系下秸秆还田不利水稻前期生长，但能显著提高水稻生长中、后期的生长指标，并增强水稻生长中、后期对氮、磷、钾等养分的吸收 ...
李思平 +6 more
doaj
Shuitu Baochi Xuebao, 2007 采用盆栽试验比较研究了等施用量及等氮量的硫包衣尿素(SCU)和普通尿素对水稻的增产效应以及氮肥利用效率的影响.结果表明:(1)在水稻生育前期,施用等氮量的SCU处理水稻生物量低于普通尿素处理;成熟期等氮量和等施肥量下,施SCU处理的水稻籽粒产量比普通尿素处理分别高出35.7%,19.3%,等氮量SCU处理水稻的千粒重较大而有效穗数较小;(2)SCU处理较普通尿素处理较大幅度地提高了水稻的氮肥利用率和水稻氮肥偏生产力,相同肥料施用量下,SCU氮肥利用率为47.35%～57.48 ...
张永春 +6 more
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