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枣锈病:以真菌冬孢子堆在病落叶和二至三年生枝条上越冬。一般6月下旬至7月上旬病菌侵入叶片,使叶背生淡黄色的锈状孢子堆,7月中下旬开始发病,雨水多则发病重,严重年份可引起枣树暴发性早期落叶落果,造成绝收。防治措施:(一)清园。冬季要彻底清除病落叶,集中烧毁或深埋,以消灭初侵染的病原菌。(二)冬剪。疏去病虫枝和过密枝,打开层次,以利通风透光。(三)不宜与高杆作物间作。(四)喷药防护。从7月上旬开始,每隔15天喷一次,多雨年份喷3至4次;药剂可选用25%粉锈宁可湿性粉剂1000—1500倍液,或50%硫悬浮剂200—300倍液。枣裂果症:因高温多湿或土壤缺钙而引起的生理性病害。果实近成熟时,果皮变薄,遇多雨天气,果面裂开,果肉外露变酸,不堪食用,更易引发炭疽病等,加速果实腐烂。
Jujube rust: fungus winter spores in the diseased leaves and two to three years old branches overwintering. In general from late June to early July germs invade the leaves, leaf back yellow rust-like spore heap, beginning in late July onset, the incidence of more rain is heavy, serious years can cause jujube outbreak of early deciduous fruit, resulting in Never accept. Prevention and treatment measures: (a) Clear Park. In winter to completely remove diseased leaves, concentrated burned or buried to eliminate the initial infection of pathogens. (B) winter shear. Sparse to pest branches and dense branches, open the level, to facilitate ventilation and light. (C) should not intercrop with high bar crops. (D) spray protection. From the beginning of July, spray every 15 days, rainy years spray 3 to 4 times; the agent can choose 25% triadimefon WP 1000-1500 times, or 50% sulfur suspension 200-300 times. Jujube fruit disease: Physiological diseases caused by high temperature and humidity or soil calcium deficiency. Fruit near maturity, the peel thinning, in case of rainy weather, cracking the fruit surface, the exposed fruit sour, unbearable consumption, more likely to lead to anthracnose, etc., to accelerate fruit decay.