【摘 要】
：
一、病原识别１土壤酸性危害。韭菜生长发育适合于中性土壤，如长期大量向土壤中施入粪稀、饼肥或硫酸铵等酸性肥料，就会引起土壤酸化而发生酸性危害。症状是韭叶生长缓慢、细弱
论文部分内容阅读
一、病原识别１土壤酸性危害。韭菜生长发育适合于中性土壤，如长期大量向土壤中施入粪稀、饼肥或硫酸铵等酸性肥料，就会引起土壤酸化而发生酸性危害。症状是韭叶生长缓慢、细弱和外叶枯黄。２有毒气体危害。若扣棚前大量施入碳酸氢铵或扣棚后追施碳酸氢铵，或地面撒...
First, pathogen identification 1 soil acidity hazards. Leek growth and development suitable for neutral soil, such as long-term large amount of manure applied to the soil, cake fertilizer or ammonium sulfate and other acidic fertilizers, it will cause soil acidification and acid hazard. Symptoms are slow growth of leek leaves, thin and yellowish outer leaves. 2 toxic gas hazards. If a large number of buckle shed before applying ammonium bicarbonate or ram quarry ammonium bicarbonate, or ground sprinkle ...
其他文献
Beverage emulsions are a unique class of oil-in-water (o/w) emulsions used to provide cloudy appearance,color and/or desirable aroma in the finished emulsio
问:订立了无固定期限劳动合同,是否用人单位就不能解除或终止劳动合同,劳动者就可以一直干到退休?答:从字面理解,无固定期限合同似乎是可长可短。然而,从立法本意看,无固定期
Garlic soluble solids are a new type of fructan.In order to produce this commercial fructan,the economical and rapid method of fining fructan extracts was i
The increase in crop yield,the improvement of product quality,and the reduction of losses are directly related to the availability of energy.Fossil fuels th
Supercritical fluids (SCFs) are ncreasingly replacing the organic solvents that are used in industrial purification and recrystallization operations because
On account of studying the feasibility of the production instant cereal beverage powders admixed with mulberry leaves by extrusion process to satisfy the de
It was established that trans-(+)-S-(1-propenyl)-L-cysteine sulfoxide (1-PeCSO) was involved in Allium discoloration,however,the mechanism by which 1-PeCSO