<正>施利康及土康元产品是北京新禾丰公司推广的微生物菌剂,在提高肥效、改良土壤、补充有益菌群、控制重茬病害、缓解死棵烂苗、养护根系健康、防治土传病害、减少病虫害发生等方面具有明显效果。一、施利康主要成分:硅酸盐细菌、枯草芽孢杆菌、有效活菌数:>1亿/克。产品特点:①活化硅钾。分解活化土壤中硅、磷、钾等营养元素、显著

辣椒青枯病是由假单胞杆菌引起的细菌性土传病害,是常见的辣椒根部病害之一.近年来,由于多年连作重茬,加上综合管理不善,辣椒土传病害逐年加重,从发病趋势看,青枯病所占比例逐步上升,已成为限制其高产栽培和安全生产的重要障碍.施用微生物菌剂防治土传病害作为一项环保、可持续的农艺措施将逐渐成为今后农业的主流趋势.

<正>海绿素是北京新禾丰农化资料有限公司从英国引进的优良植物生长促进剂。在全国各地大量田间应用表明,海绿素在促进根系生长,增强植株活力、抵抗冻害、冷害和旱害以及缓解药害等方面均表现出良好效果。1.海绿素主要成分为天然活体海藻素提取液,原料来自于北大西洋冷水海域的植物泡叶藻,

苦瓜又叫凉瓜、锦荔枝、癞葡萄、癞瓜等,为葫芦科苦瓜属的一年生攀缘草本植物,因其果实中含有一种糖甙,具有苦味而得名.

The dissolve ability,matching ability with trace elements, biological activities of humic acid substances from different sources are studied in the laboratory. The results show: there are great differences in the dissolve ability among the different humic acid substances;the quantities of precipitate in nutrition liquids are different by matching with trace elements;each substance has some biological activities. The applications of the different humic acid substances and selection conclusions are given by researching dissolve ability, matching ability with trace elements, biological activities.

Advances in study of mechanisms of foliar nutrition and foliar fertilizer application were reviewed.Plant leaves can absorb nutrients as roots do.There are two basic pathways for nutrients entering into the plant tissue:one is through the stomata and the other is via cuticle hydrophilic pores.Some plant leaves also can absorb nutrients actively through plasmodesmata.So the foliar uptake of nutrients depends upon plant types and the state of plants growth,composition of foliar fertilizer,characters of nutrients and environmental factors such as temperature,illumination and so on.Foliar application to dicotyledon is better than to monocotyledon because of different leaf types and structures of surface wax,and of different varietals plants of homogeneity.It is necessary to spray right fertilizers at right stage of plant growth.Some assistants,such as surfactants are required to enhance nutrients absorption in foliar fertilizers,however,most of the surfactants have a poor solubility among compositions of foliar fertilizers as they are pesticides surfactants.The development of foliar application was promoted by the research on mechanism of foliar nutrition,and now foliar application is becoming an important fertilization method.But soil application can not be replaced by foliar application of fertilizers.Foliar spray can be only as an efficiency assistant method to soil application because the quantity of nutrients supplied is limited.In recent years,foliar fertilizers developed promptly both in quantity and variety,but the quality is poor in China.So the techniques of foliar application need to be improved.Scientists should intensify their research on the mechanism of foliar nutrition and the utilization of assistants in foliar fertilizers.In future,it is necessary to enhance the quality of foliar fertilizers and foliarfertilization,study on optimization of specialized foliar fertilizers and the techniques of foliar application.

果树主要是靠根系从土壤溶液中吸收各种营养物质的,但其枝、叶、果实也具有一定的养分吸收能力.因此,生产中果树施肥方法主要有两种:即土壤施肥和叶面施肥.只有根据果树地上部和地下部动态平衡关系,选择科学合理施肥技术,才能实现果树的高产、稳产和优质,并可提高果树对肥料的利用率.一般果树的施肥主要分基肥和追肥,追肥又可分为土壤追施和叶面追施.

<正>从产业的规模和总产量来看,无论世界还是中国,中微量元素肥料产业都具有少而精的特点。少是指农业的需求量远远少于氮磷钾大化肥的数量,精是指对产品的技术含量包括物理、化学、生物等综合性状要求高。而且,它的发展是应现代高产高效可持续农业发展的需求,并与农业集约化和设施栽培的发展相伴随。目前我国农业在经过了多年持续高产和大量元素化肥不断投入的情况下,广大农田微量元素缺乏的问题日趋凸显,导致近年来我国农业对微肥的需求量逐年增多,由此拉

对于作物叶面吸收而言,环境因素复杂多变.不同的喷施时间,温度、湿度、光照、土壤养分条件等环境条件有很大差异,将对叶面养分吸收产生不同的影响.一方面,环境条件可以影响作物生长,改变叶片蜡质层与角质层的组成结构,从而影响养分叶面吸收;另一方面,各种环境条件影响喷施液在叶表的浸润时间以致影响养分叶面吸收效果.

近年来,蔬菜生产发展很快,种植面积增加也很快,大部分是由粮田改种蔬菜或大棚蔬菜的,而蔬菜是需高肥、水的一类作物,因而大部分土壤相对来说肥力不高,有机质及养分含量偏低,不能满足蔬菜生长发育的需求,故而需要大量的使用肥料和灌溉.而长期大量的施肥、灌水将造成土壤和地下水的污染.可见,菜田施肥是蔬菜栽培中一项技术性很强的措施,要做到合理施肥并非易事.了解蔬菜需肥特性,掌握施肥技术,做到平衡施肥,是夺取蔬菜高产、稳产、优质的关键措施之一.