小苍兰连续6个月供花栽培技术研究

利用促成栽培、常规栽培和延迟栽培相结合的方法,使小苍兰在上海地区达到１２月至次年５月连续６个月供花。促成栽培为种球经乙烯利处理提前打破休眠,再结合低温加赤霉素处理,于１２月至次年２月供花;在高温期间采取降温措施和低温期间采取加温措施,于２月底～３月供花。常规栽培于３月底～４月底供花。延迟栽培为１２月１日～１２月２０日种植常温贮藏的小球茎,于５月份供花。     

沙漠地区农业种植技术初探

沙漠地区在没有造林或造林初期防护效益不显著情况下，农业种植受风沙危害比较严重，提高农业种植产量是我们面临的一道难题。本文对中国林科院沙漠林业实验中心井灌区第四实验场风沙环境和三年来的种植情况进行分析，得出农业防风害的措施有以下几个方面：农作物品种的选择；种植时间的调整；以增加起动风速为目的的各项抗风害措施的采用；以减小风沙流强度和目的的阻沙林和固沙工程的建造。这些措施能有效地减小和防止风沙灾害的发     

Foliar Application of Glycinebetaine and Salicylic Acid Improves Growth,Yield and Water Productivity of Hybrid Sunflower Planted by Different Sowing Methods

Improved planting methods and foliar application of glycinebetaine (GB) and salicylic acid (SA) can improve the water productivity in field crops under limited water supply conditions. A 2‐year field study was conducted to evaluate the possible role of different planting methods and foliar applications of GB and SA in improving the yield, quality and water productivity of hybrid sunflower (Helianthus annuus L.). The crop was planted by flat sowing (75 cm spaced rows) and ridge sowing (75 cm spaced ridges), with GB and SA applied exogenously at 100 and 0.724 mm , respectively, at both budding and flowering stages, while control plots received distilled water. Ridge sowing, rather than flat sowing, improved the biological yield, oil yield, leaf area index (LAI), crop growth rate (CGR), plant height, water‐use efficiency and final achene yield during both the years. Foliar applications of GB and SA at both the stages improved the achene yield, although foliar application of GB at flowering was the most effective. Neither the planting methods nor the foliar application of GB and SA altered the achene oil contents during both the years. Foliar application of GB and SA increased the free proline content of the leaf and GB contents at flowering but reduced the achene protein contents, whereas planting method had no effect on these attributes across the years. Of the foliar applied chemicals, GB was more effective in improving sunflower growth and yield and water productivity than SA. To conclude, ridge sowing coupled with foliar application of GB at flowering stage could be beneficial for achieving maximum yields of hybrid sunflower under relatively water limited conditions in the field.     

麻竹山地栽培丰产技术总结

本文是多年来，通过对我省东南沿海几个县（市）山地栽培麻竹进行调查研究，分析其生长情况，并与沙滩等地类的麻竹生长情况进行对比，提出山地麻竹丰产栽培技术的配套措施、其包括：麻竹造林技术、幼林管理、成林抚育管理和病虫害防治等。     

生物炭对植烟土壤养分的影响

为探讨生物炭作为土壤改良剂对植烟土壤养分含量的影响,以湖南烟区主要栽培品种云烟87为试验材料,通过大田试验研究了不同的生物炭用量(CK:0 kg/hm~2;T1:3 000 kg/hm~2;T2:3 750 kg/hm~2;T3:4 500kg/hm~2)下植烟土壤中的养分含量。结果表明:施用生物炭能够显著提高植烟土壤有机质、碱解氮、铵态氮及速效钾含量,且随着生物炭施用量的增加呈先升高后降低的趋势,从改良土壤肥力效果来看,生物炭施用量在3 750 kg/hm~2的水平下较为适宜。     

滇西南蔗区新有害生物-阔叶丰花草

近年来，临沧市部分蔗地发现一种新杂草，经实地调查和查阅相关资料，结果表明该物种是原产于南美洲热带地区，现已入侵广东南部、海南、香港、台湾、福建南部和浙江温岭一带的茜草科新归化种阔叶丰花草（Spermoce latifolia Aubl.），该杂草尚未受到足够的重视。在对其入侵路径及危害、形态特征及消长规律进行归纳的基础上，重点提出了防控建议和防除措施。     

推广人工种草技术发展草食牲畜

人工种草能促进农、林、果、渔、蜂、药材、畜牧业及旅游业的兴旺，能有效地防止水土流失，绿化人类环境，是一项加快山区经济建设发展的费省效宏项目。     

日本羽衣甘蓝引种载培试验研究

据在延边、长春引种载培试验结果，日本羽衣甘蓝具有色彩艳丽、球叶紧抱、株形低矮、观赏价值高、耐塞性强等优点，可供１０月～１１月花坛绿化使用，恰好能弥补东北地区１０月～１１月花坛花卉缺乏的不足，不愧为冬季花坛的好材料．     

蔗区降雨分布与甘蔗需水及加肥灌溉效应

1材料与方法 1．1试验概况选择有代表性的甘蔗种植区广西壮族自治区来宾市进行田间试验，供试甘蔗品种为“台糖22”，种植密度45000芽段／hm^2。各生长阶段降雨观测在田间试验旁进行，试验地养分测定按常规方法。     

海南香荚兰产业化发展种植模式探讨

通过介绍香荚兰生长的环境条件、开花结荚习性和国外香荚兰发展的成功经验,分析海南发展香荚兰的利弊因子和现有种植模式的投资概算,探讨一种投资少发展快、效益高的种植模式,以促进海南香荚兰生产的产业化高效发展。