| Rice is primary food crop of our country, which is also one of most important merchant foods. It deals with lives of people and the safety of food supply. Hubei province grows much rice and is an important merchant food base. It seeds area and total yield are big in our country.This study combined Hubei province item of the project of country important food foisori science and technology. It considered the difference of climate character, cultivate system and plant habit in the southeast of Hubei, in the middle of Hubei, in the northwest of Hubei and in the Jianghan plain four rice plant areas. It had formed " double season rice three ripe high yield in the southeast of Hubei mode "," sparse, manipulative, weight middle season rice high yield in the middle of Hubei mode", " zero till light-duty high yield plant in the Jinghan plain mode" and " cover with ground film wet in all process in the northwest of Hubei plant mode" four adaptive plant modes base on present plant modes. It tested in Wuxue, Suizhou, Shayang and Fang county respective. Through the represent of four plant modes, studied the technology and economy of rice high yield plant integration modes.The early rice yield of "three ripe three high" of Hubei's southeast mode in Wuxue reached 609 kg/667m~2 (increased 25.3% compare with normal plant), the late rice yield reached 624 kg/667m~2 (increased 26.1% compare with normal plant), the rice yield of total year reached 1233 kg/667m~2. The pure economic benefit of early rice reached 290 Yuan per 667m~2, which reached 268 Yuan per 667m~2 of late rice, increased 124 Yuan and 160 Yuan per 667m~2 respective compare with normal plant. Compared with beyond high yield mode, "three ripe three high" mode declined in yield, but ascended in pure benefit and declined in marginal cost. It showed that this mode was better than "beyond high yield mode" though lower in yield. Farmers evaluated this mode overmatching normal mode except for difficulty in technology and intensity in labor." Sparse , manipulative , weight middle season rice high yield in the middle of... |
