【摘 要】
:
葫豆青苗质地柔嫩多汁,富含蛋白质和脂肪,用作饲料喂养家畜已有很长的历史。加之具有生长期短、产量高、再生力强等优点,使其成为我省冬春季主要的高产青饲料。目前我省葫豆
论文部分内容阅读
葫豆青苗质地柔嫩多汁,富含蛋白质和脂肪,用作饲料喂养家畜已有很长的历史。加之具有生长期短、产量高、再生力强等优点,使其成为我省冬春季主要的高产青饲料。目前我省葫豆种植面积约500万亩,其中收籽粒的面积约300万亩,单产100多公斤。割青面积约200万亩,主要集中于川西地区,单产1000—1500公斤,年用种量几百万公斤。由于用作饲用葫豆品种少,需种量大,常年省内不能自给,每
Gourd juvenile texture soft and juicy, rich in protein and fat, used as feed to feed livestock has a long history. In addition, it has the advantages of short growth period, high yield and strong regeneration, making it the main high-yielding green feed in winter and spring in our province. At present, our province gourd planting area of about 5000000 acres, which received grain area of about 3000000 acres, more than 100 kilograms per unit. Cut green area of about 2000000 acres, mainly in western Sichuan, yield 1000-1500 kg, with several million kg of species. Due to the small variety used for feeding gourd, the need for large quantities, perennial provinces can not be self-sufficient, each
其他文献
高中数学课引入了导数的概念及一些导数的运算、简单应用,利用导数的知识可以快速简便求解物理问题.
We experimentally and theoretically observe the expansion behaviors of a spherical Bose-Einstein condensate.A rubidium condensate is produced in an isotropic op
化学观念是指用化学眼先去认识和处理周围的事物.化学观念的建立,直接影响学生学习的态度.本文主要是着眼于随着环境污染的日趋严重以及公众对环境问题的日益关心,化学在社会
柑橘是世界上具有重要经济价值的水果。生产中容易受到冷害和热害等环境胁迫的影响。鉴于柑橘童期长、遗传上不亲和、存在珠心胚干扰等问题,遗传研究困难,杂交育种在短期内难以
Inspired by recent discoveries of the quasi-Josephson effect in shunted nanowire devices,we propose a superconducting nanowire interference device in this study
本文从教学方法与手段和教学效果等方面做了初步研究,对课程的教学方法进行了创新--任务驱动法教学,阐述了山东外贸职业学院课程的教学改革与实践.
梨作为重要的水果之一,在亚热带和温带地区均有广泛种植。但在生产中,它常遭遇多种病菌的危害。几丁质酶作为一类非常重要的病程相关蛋白,在植物抗病过程中起着非常重要作用。研
We exhibit some new dark soliton phenomena on the general nonzero background for a defocusing three-component nonlinear Schr(o)dinger equation.As the plane wave
The experimental knowledge on interlayer potential of graphitic materials is summarized and compared with the computational results based on phenomenological mo
茶树是喜温喜湿的多年生叶用作物,对温湿度的要求较高。在生长发育过程中,如果水分供应不足,茶树的正常生长就会受到影响,严重时,幼龄茶树容易死亡,生产茶园的茶叶品质变劣,