冀西北高原不同土壤类型对饲用玉米产量及水分利用率的影响

来源 :河北北方学院学报(自然科学版) | 被引量 : 0次 | 上传用户:rylove006
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
在冀西北半干旱高寒区的两种不同类型的土壤中,进行饲用玉米产量和水分利用率的研究.结果表明:滩地玉米的产量明显高于沙地玉米.在降水一定的年份,同样的栽培条件下,滩地的储水量大,耗水量小,玉米在滩地的水分利用率均高于沙地.水分利用率高的产品产量也高.
其他文献
目的:探讨全程人文关怀护理在手术室患者临床护理中的应用效果。方法:将我院收治的92例行择期手术患者按随机分层分组法分为对照组和观察组,对照组采用护理干预,观察组给予人文关
AIM: To prepare a kind of magnetic iron-dextran nanopartidesthat was coated with anti-E.coli O157:H7 IgG, analyze its application conditions, and try to use it
在春季(3月中旬),夏季(7月中旬)和秋季(11月中旬)对青海海西地区荒漠半荒漠草地中的土壤、可食牧草和绵羊的血清、瘤胃液、被毛等进行了检测分析.结果表明:7月份的土壤全氮为
Biodegradable chitosan-g-poly (D, L-lactic acid) copolymers were prepared via two methods. (1) The lactide was grafted onto hydroxyl groups of chitosan by using
Hybrid polymers, poly(vinyl pyrrolidone-co-isobutyl styryl polyhedral oligomeric silsesquioxanes)s (PVP-POSS) were synthesized by one step polymerization and ch
One trial was conducted to study nutrition digestibility of Euchsaena mexicana Schrad (EMC) diets for Wulong Goose.Thirty-two geese of 9 months old were selecte
本试验的主要目的是根据不同添加比例的复合酸化剂和乳清粉对23日龄断奶仔猪生产性能的影响,从而确定复合酸化剂代替乳清粉的可行性及其合理的代替量.试验结果表明:随着复合
对4种不同退化程度的高寒草甸(未退化草甸、轻度退化草甸、中度退化草甸、重度退化草甸)土壤种子库种子用不同大小孔径分析筛进行分离处理.结果表明:未退化高寒草句可萌发种
Two new compounds involving a thiophene moiety named as 2,5-bis[4-(N,N- diphenylamino)styryl]thiophene (BPST) and 2,5-bis[4-(N,N-diethylamino)styryl]thiophene (
Background Recently, arsenic trioxide (As2O3) was considered as a novel anti-tumor agent. However, it showed severe toxicity effect on normal tissue at the same