Release date: 2009-07-01
Recently, researchers at the Federal University of Technology in Zurich, Switzerland, have developed the world'.......
1. Sufficient seedling period: The so-called seedling is the seedling number of 80% of the planned number of panicles. Under normal weather conditions, throwing stubble at constant tillage takes about 16-18 days after throwing, and it takes about 18-20 days .......
Peach borer Carposina niponensis Walsingham referred to as peach small, is a Lepidoptera, fruit Moth family. Peach fruit borer is harmful to peach, and the fruit is usually discharged from the fruit hole into teardrop-shaped glial spots shortly after the fruit.......
Goats grow to a certain age, the genital organs are basically fully developed and have the ability to reproduce. This period is called sexual maturity. It is the ram that begins to have normal sexual behavior, the ewe begins .......
Retaining sorghum at the time of wheat harvest is the easiest and most effective way to increase the production of fertilizers. It has been widely used for many y.......
The grape-winged moths are widely distributed and have been documented in Liaoning, Hebei, Henan, Shandong, Shanxi, Jiangsu, Zhejiang and Sichuan provinces as well as Beijing and Tianjin.
Injury larvae eat vines, causing dendrites to die. The victim d.......
The harvesting period of eggplant is the period before the closing of the "egg eye", that is, where the sepals are connected to the fruit. When the white parts of the peel are few, it indicates that the fruit grows slowly and is transferred into the seed developme.......
At present, the Hengshui cotton plant has generally grown to 2 to 4 leaves, and the total seedling area accounts for more than 80% of the cotton field area. However, due to cotton sowing, the early rainfall is relatively high, the temperature is low, the lack of light photography, resultin.......