Key points of high-yield cultivation techniques for rice intercropping of hybrid rice and glutinous rice

Rice "hybrid-glutinous intercropping" refers to the intercropping cultivation of hybrid rice and glutinous rice. That is, medium-stalk hybrid rice and tall-stalk glutinous rice, using the advantage of the wide rows in the wide-narrow row strip planting of hybrid rice, and adding a single row of glutinous rice according to a certain belt width, row ratio and width.

1. Main advantages of hybrid-glutinous intercropping technology

1. Increasing rice yield: Test results show that the combined total of the two crops under hybrid-glutinous intercropping increases yield by 28 kg per 667 sq m compared with ordinary hybrid rice, and by 110 kg compared with conventionally pure-planted glutinous rice.

2. Increasing income: Glutinous rice is about 15% higher in price than ordinary medium-season hybrid rice. The increased income from higher yield plus the increased income from improved quality together amount to an increase of 50 yuan in output value per 667 sq m and an increase of 35 yuan in net income.

3. It overcomes the problems of low yield and susceptibility to disease in pure planting of glutinous rice, and the difficulty of promoting high-quality hybrid rice because of its low yield under pure planting, and it helps improve rice quality.

2. Main cultivation technical measures

1. Select good varieties and make a good combination of the main crop and the intercrop varieties: For hybrid rice, select combinations such as Zhunliangyou 527 and Jinyou 725, which have moderate plant height, strong adaptability, high yield and good grain quality; for the intercropped glutinous rice, select varieties such as Nuoyou No. 1 and Jingnuo No. 1, which have hard stems, resistance to lodging, large panicles, many grains and good quality.

2. Rational planting: Use semi-dry wide-narrow row planting or wide-row narrow-plant planting, and plant hybrid rice with two plants per hill, planting 1 row of glutinous rice every 4 rows, with a plant spacing of 50-67 cm, and 1200-1500 hills interplanted per 667 sq m. For conventional glutinous rice, plant 4-6 plants per hill, and for hybrid glutinous rice, plant 2 plants per hill.

3. Scientific fertilization: Use special fertilizer for rice, applying 40 kg-50 kg per 667 sq m as base fertilizer; at the tillering stage, apply 8 kg-10 kg of urea per 667 sq m as topdressing; at the panicle stage, use 100-150 g of Libaoduo per 667 sq m mixed with 50 kg-60 kg of water for foliar spraying as panicle fertilizer.

4. Strengthen integrated control of diseases, insect pests and weeds.

5. Other supporting technical points: ① Sow hybrid rice and glutinous rice at the same time, and plant them at the same time. ② Treat seeds with chemicals before sowing. ③ Harvest glutinous rice or hybrid rice at the right time, and ratoon rice can be retained.