问题:根据作物特性、气候条件、土壤状况、肥料性质及耕作制度等所采取的正确施肥措施称为()。...
Thursday, November 23, 2023
问题:防治蜗生对桑园的危害,生物防治方法是保护蜗牛的天敌步行虫、蛙、晰易等。...
Friday, August 18, 2023
Thursday, March 23, 2023
问题:春蚕每千克茧用叶(),每盒蚕种用叶()(芽叶),秋蚕每千克茧用叶(),每盒蚕种用叶()(片叶)。...
Friday, January 26, 2024
Sunday, April 21, 2024
问题:桑树休眠后,用锯或桑剪除去桑树的死拳、枯桩、病虫枝与细小的无效枝,称为整枝修拳。...
Thursday, April 11, 2024
问题:不良茧;()、()、()、()、()、()、()、()。...
Sunday, April 21, 2024
Tuesday, March 5, 2024
Tuesday, November 21, 2023
Tuesday, January 30, 2024
问题:为提高综合效益,杂交桑嫁接栽植后的上半年桑树生长快,不可以套种豆类、洋芋、蔬菜等矮杆作物。...
Thursday, February 2, 2023
问题:地桑也称无干桑,是一种树干大致与地面平行的独拳树型。...
Friday, March 29, 2024
问题:桑树绿枝扦插育苗扦插适期为中秋蚕或晚秋蚕后期()...
Tuesday, January 30, 2024
问题:蚕病微生物((),(),(),()),对于各种病源微生物的抵抗力,蚕龄(),抵抗力()。...
Tuesday, January 30, 2024
问题:桑苗定植后要适时施肥。为满足桑树生长的要求,一年中需进行春、夏、秋、冬四次追肥。...
Friday, November 17, 2023
Thursday, April 11, 2024
Thursday, August 31, 2023
Tuesday, March 5, 2024
问题:()、()、()、()、(),化学消毒,漂白粉消毒=甲醛石灰水消毒,石灰消毒,毒消散消毒,蚕康宁消毒,防消散消毒,优氯净消毒。...
Thursday, September 7, 2023
Tuesday, November 21, 2023