By monitoring the air temperature at six different heights near the surface of farmland during the late jointing and booting stages of winter wheat in Shangqiu City, He’nan Province, the variation pattern of daily minimum temperature near the surface and the temperature reduction pattern at different heights during the cooling process during the occurrence of late frost damage were analyzed. The results show that: during the cooling process, the daily minimum temperature at different heights showed a logarithmic decreasing trend. The cooling rate varies at different heights during the cooling process. The lowest temperature in farmland occurs at the height of the canopy, below which the higher the height, the lower the temperature, and the faster the cooling rate. The correlation between temperature at different heights and soil temperature and soil moisture was not significant.
为探讨不同施肥处理对 1～3 年幼龄果林套种大豆生长的影响,研究分析了不同施肥处理对幼果林内赤豆 5 号的植株性状、产量性状的影响.结果表明,与不施肥处理相比,不同施肥处理显著提高了幼龄果林内套种大豆的综合性状和产量,产量顺序为常规肥+叶面肥>常规肥>ck.其中,常规肥+叶面肥处理产量为 1 853.60 kg/hm2,比对照增产259.90 kg/hm2,增产率为 16.3%,综合性状表现较好.
为探索栽培措施对酒用高粱红珍珠产量的影响,于2020-2021 年以大区对比形式,采取高产种植方法和常规种植方法对红珍珠进行田间管理,并对两种不同种植方法的产量及构成因素进行分析.结果表明,在红珍珠产量构成因子中,对产量影响最大的是有效株数,通径系数为 0.536 1,其次是每穗粒数,通径系数为 0.423 1.要提高红珍珠的产量,要从提高种植密度,确保田间有效株数,同时在传统方法的基础上增施穗肥,以提高穗粒数,进而提高产量,达到酒用高粱红珍珠高产高效的目标.
分析四川省乐山地区红果参产业发展现状,为提高产业发展水平提供参考.通过大量深入果园,调查走访和查阅资料,分析四川红果参栽培和产业发展现状、存在问题及发展前景,并提出相应的对策建议.结果表明,在四川乐山地区发展红果参具有气候、土地、人才等资源优势,四川乐山地区红果参产业发展迅猛,逐步形成了一个对果农致富、乡村振兴、扶贫脱贫起重要作用的红果参产业,在育苗、种植、物流、销售等领域解决了大量劳动力就业.但仍存在管理水平参差不齐,资金不充裕,科技创新不足等问题.加强对红果参产业的项目和金融扶持,注重提质增效,建立健全研发体系,以更好推动四川乐山地区红果参产业良性发展.
为筛选出适合贵州省黔东南地区露天栽培的西瓜品种,并探究西瓜的优质高产栽培技术,2021-2022 年在黔东南州麻江县河坝村引种了早佳 8424、特小凤和拿比特等 3 个西瓜品种.经过观察和分析表明,早佳 8424 西瓜的综合性状表现优良,更适合本地露天栽培,受市场欢迎程度较高.特小凤西瓜果实性状表现次之,受市场欢迎程度也较高,但易裂果,更适合设施栽培.本文就 3 个西瓜品种的引种表现和优质高产栽培技术进行总结,以供参考.
